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| 1 | Composition and solution properties of fluorinated block copolymers and their surface structures in the solid state显示文摘A series of diblock copolymers composed of methyl methacrylate and 2-perfluorooctylethyl methacry-late(PMMA144-b-PFMAn) with various PFMA block lengths were prepared by atom transfer radical po-lymerization(ATRP).The surface structures and properties of these polymers in the solid state and in solution were investigated using contact angle measurement,X-ray photoelectron spectroscopy(XPS),sum frequency generation(SFG) vibrational spectroscopy,surface tension and dynamic laser light scattering(DLS).It was found that with increasing PFMA block length,water and oil repellency de-creased,the ratio of F/C increased with increasing film depth,and the degree of ordered packing of the perfluoroalkyl side chains at the surface decreased.When the number of PFMA block units reached 10,PMMA segments were detected at the copolymer surface,which was attributed to the PFMA block length affecting molecular aggregation structure of the copolymer in the solution and the interfacial structure at the air/liquid interface,which in turn affects surface structure formation during solution solidification.The results suggest that copolymer solution properties play an important role in struc-ture formation on the solid surface. | NI HuaGang XUE DongWu WANG XiaoFang ZHANG Wei WANG XinPing SHEN ZhiQuan | 2009 | Science China Chemistry2009，52，2： | 6 |
| 2 | One-step preparation of polyimide-inlaid amine-rich porous organic block copolymer for efficient removal of chlorophenols from aqueous solution显示文摘A novel polyimide-inlaid amine-rich porous organic block copolymer(PI-b-ARPOP) was prepared via one-step polymerization by using different molar ratios of melamine(MA)/terephthalaldehyde(TA)/pyromellitic dianhydride(PMDA), at molar ratios of 4/3/1, 4/2/2 and 4/1/3. The copolymer contained both aminal groups belonging to ARPOP and imide groups belonging to PI, and the bonding styles of the monomers and growth orientations of the polymeric chains were diversiform, forming an excellent porous structure. Notably, MA/TA/PMDA(4/2/2) had a surface area and pore volume of 487.27 m^2/g and 1.169 cm^3/g,respectively. The adsorption performance of the materials towards 2,4-dichlorophenol(2,4-DCP) in ultra-pure water was systematically studied. The pH value of 7 was optimal in aqueous solution. Na^+ and Cl^-ions did not negatively affect the adsorption process, while humic acid(HA) slightly decreased the capacity. The equilibrium time was 40 sec, and the maximum adsorption capacity reached 282.49 mg/g at 298 K. The removal process was endothermic and spontaneous, and the copolymer could maintain its porous structure and consistent performance after regeneration by treatment with alkali. Moreover, to further assess the practical applicability of the material, the adsorption performance towards 2,4-DCP in river water was also investigated. This paper demonstrated that the PI-b-ARPOP can be an efficient and practical adsorbent to remove chlorophenols from aqueous solution. | Yanyang Liu Haijian Ou Shangqing Li Qingliang You Huixian Liu Guiying Liao Dongsheng Wang | 2019 | Journal of Environmental Sciences2019，31，4： | 1 |
| 3 | SYNTHESIS AND CHARACTERIZATION OF HYDROPHOBIC-HYDROPHILIC MULTIBLOCK COPOLYMERS FOR BIOMEDICAL APPLICATIONS显示文摘The synthesis and characterization of amphiphilic copolymers of poly(dimethyl siloxane)(PDMS),poly(ethylene oxide)(PEO), and heparin(Hep) were investigated. These multiblock copolymers wereidentified using ~1H-NMR, FTIR, end group analysis, and sulfur elemental analysis. The multiblockcopolymers were characterized by using DSC and X-ray diffractometry. The glass transition temperature,crystalline melting characteristics, annealing effect, and cold crystallization of the block copolymers weredetermined by DSC. The crystallinity of the block copolymers was also determined by X-ray diffractionmethod. | Yong Kiel Sung Yong Joo Kim Sung Wan Kim | 1999 | Chinese Journal of Polymer Science1999，17，2： | 1 |
| 4 | Modular synthesis of a block copolymer with a cleavable linkage via “click” chemistry显示文摘A diblock copolymer poly(ethylene glycol)-block-polystyrene or PEG-b-PS with an olefinic double bond at the PEG and PS junction has been prepared by modular synthesis via'click'chemistry.This involved the synthesis of PS by atom transfer radical polymerization and the nucleophilic substitution of the terminal bromide group with azide to yield azide-terminated PS. PEG with an alkynyl terminal group was prepared from reacting carboxyl-end-functionalized PEG with 4-hydroxybut-2-enyl prop-2-ynyl succinate,which contained an alkynyl group as well as an olefin group.The PS and PEG polymers were linked via the 1,3-dipolar cycloaddition of the end azide and alkyne groups.The obtained copolymer was characterized by 1H NMR spectroscopy and size exclusion chromatography(SEC).SEC analysis indicated that the diblock copolymer produced could be readily cleaved by ozonolysis to regenerate the constituent homopolymers. | Fu, Yu Liu, GuoJun | 2010 | Science China Chemistry2010，53，5： | 1 |
| 5 | Chemoenzymatic synthesis amphiphilic H-shaped copolymer and its self-assembly behavior显示文摘ABA triblock copolymers were synthesized by dihydroxyl-capped PEO initiated enzymatic ring-opening polymerization (eROP) of ε-CL in the presence of biocatalyst Novozyme 435. The chains ended with hydroxyl of block copolymers were modified by the esterification of 2,2-dichloro acetyl chloride (DCAC) to obtain the tetrafunctional macroinitiator,which was used in the ATRP of 4-vinylpyridine (4-VP). CuCl/HMTETA was used as the catalyst system in the ATRP of 4-VP to acquire the H-shaped block copolymers (PVP)2-b-PCL-b-PEG-b-PCL-b-(PVP)2. The H-shaped block copolymers were characterized by FTIR,NMR,and GPC. Copolymers with high molecular weights (Mn = 46121 g/mol) and low polydispersities (Mw/Mn = 1.30) were prepared. Moreover,the morphology of the copolymer was examined with dynamic light scattering (DLS) and atomic force microscopy (AFM). Spherical micelles with a diameter of 70 nm in aqueous solution were obtained. | ShuWei Wang Bao Zhang Peng Ai Ming Zhu Wei Wang ZhongPeng Sa LiNa Ma YaPeng Li | 2009 | Science China Chemistry2009，52，12： | 1 |
| 6 | Macroscopic lamellae orientations of diblock copolymer induced by dynamic shear显示文摘Computer simulation based on the coupled map lattices has been carried out for morphologies of the diblock copolymeric system under applied periodic shear deformation.The main effort is concentrated on the influence of pre-annenling history on the lamellae orientations in dynamically sheared diblock copolymers.It is found that whatever the quenching temperature is,the perpendicular orientation (i.e.the lamellae normal is parallel to the vorticity axis) is always observed if the dynamic shear deformation with shear amplitude F=1.0 and reduced shear frequency=0.005 is applied during annealing.In contrast to that,the parallel orientation (i.e.the lamellae normal is parallel to the velocity gradient direction) is observed if the dynamic shear with the same amplitude and frequency is applied to a thoroughly annealed (with the annealing time t>4 000) diblock copolymer.Therefore,it is pointed out that the selection of lamellar orientations in dynamically sheared diblock copolymers is not solely dependent on | 张红东 杨玉良 | 1997 | Science China Chemistry1997，40，1： | 1 |
| 7 | The Location-influenced Fluorescence of AIEgens in the Microphaseseparated Structures显示文摘The fluorescent probe techniques have been widely applied.When the fluorescence probes are selectively located in nanostructures,the fluorescence properties are highly influenced by the environment.Here,we systematically studied the location-influenced fluorescence of AIEgens in the microphase-separated structures.The AIEgen tetraphenylethene (TPE) was doped into polystyrene-bpolyisoprene (PS-b-Pl).TPE was selectively located in the PS nanodomains.The TPE fluorenscence was affected by the structural relaxation of PS when investigated in a wide range of temperatures,including the glass transiton and secondary transiton.When TPE groups were selectively located in the PI nanodomains,the fluorenscence was affected by the glass transitons of PI and PS blocks.Amphiphilic TPE derivative was located at the interface of the assembly.The fluorescence emission was influenced by the main transition and secondary transiton of PS blocks,as well as the main transition of PI blocks.These results would give new understanding of the interrelation between fluorescence probes and the nanostructures. | Ya-Fang Zhi Chao Li Ze-Hua Song Zhong-Jia Yang Hong-Wei Ma Long-Cheng Gao | 2019 | Chinese Journal of Polymer Science2019，37，11： | 1 |
| 8 | SYNTHESIS OF NOVEL BLOCK COPOLYMERS OF POLY(3-HYDROXYBUTYRIC ACID)WITH POLY(ETHYLENE GLYCOL)THROUGH ANIONIC POLYMERISATION显示文摘A novel kind of copolymer with ABA-type block structure was synthesized by anionic ring-openingpolymerization of β-butyrolactone (β-BL) in the presence of a PEG-based dicarboxylates as macroinitiators which wereprepared by the esterification of aliphatic cyclic anhydride and poly(ethylene glycol) (PEG) oligomers (M_n=2000, 4000 and6000) and conversion of potassium dicarboxylates. The resultant copolymers as well as the intermediates were characterizedby IR,~1H-NMR and GPC. | Xin-tao Shuai Zbigniew Jedlinski Qiang Luo Nozirow Farhod Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Institute of Polymer Chemistry, Polish Academy of Sciences, 41-800 Zabrze, Poland Institute of Synthetic Fibre, Chinese Academy of Textile Sciences, Beijing 100025, China | 2000 | Chinese Journal of Polymer Science2000，18，1： | 0 |
| 9 | SYNTHESIS OF BLOCK COPOLYMER BY INTEGRATED LIVING ANIONIC POLYMERIZATION-ATOM TRANSFER RADICAL POLYMERIZATION(ATRP)显示文摘Alpha-trichloroacetoxy terminated polystyrene oligomer (PS-CH2CH2OCOCCl3) and poly-(styrene-b-butadiene)oligomer [P(S-b-B)-CH2CH2OCOCCl3)] were synthesized by living anionic polymeri-zation using n-butyllithium as initiator.Then the PS-CH2CH2OCOCCl3 (PS-Cl3) or P(S-b-B)-CH2CH2O-COCCl3 (PSB-Cl3) was used as the macroinitiator in thepolymerization of (meth)acrylates in the presence of CuX/bpy. AB diblock and ABC triblock copolymers were prepared bythe integrated living anionic polymerization (LAP)-atom transfer radical polymerization (ATRP). The structures of the PSB-Cl3 and the P(S-b-MMA) were identified by FTIR and 1H-NMR spectrum, respectively. A new way to design blockcopolymers (the combination of LAP and ATRP) was developed. | Bing Liu Feng Liu Ning Luo Sheng-kang Ying Qing Liu Laboratory of Living Polymerization, East China University of Science and Technology, Shanghai 200237, China Research Institute of Beijing Yanshan Petrochemical Corporation, Beijing 102549, China | 2000 | Chinese Journal of Polymer Science2000，18，1： | 0 |
| 10 | Syntheses and Studies of PEG-b-PNIPA Block Polymers显示文摘SynthesesandStudiesofPEG┐b┐PNIPABlockPolymersCAOWei-xiao**andZHANGTao(ColegeofChemistryandMolecularEnginering,PekingUniversit... | CAO Wei xiao ** and ZHANG Tao (College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871) | 1997 | Chemical Research in Chinese Universities1997，13，2： | 0 |
| 11 | Synthesis and characterization of diblock copolymer of butadiene and 2-ethyl-2-oxazoline显示文摘By mechanism transformation (anionic cationic) polymerization, diblock copolymer of butadiene and 2 ethyl 2 oxazoline (PBd b PEOx) was synthesized in two steps. The first step is the polymerization of butadiene block capped with ethylene oxide and its tosylation; the second step is the cationic ring opening polymerization of 2 ethyl 2 oxazoline. The products were characterized by various methods, such as IR, 1HNMR, DMA, TEM and SAXS. The results show that the obtained copolymers possess high molecular weight and narrow molecular weight distribution, and that the content of 1,4 structure was controllable. | 徐胜清 黄葆同 | 1998 | Science China Chemistry1998，41，2： | 0 |
| 12 | WHOLLY-AROMATIC THERMOTROPIC LIQUID CRYSTALLINE POLYMER AND ITS BLOCK COPOLYMER显示文摘A wholly-aromatic thermotropic liquid crystalline polymer (WATLCP) composed ofp-hydroxybenzoic acid (HBA), 4,4’-dihydroxy bisphenyl (BP), terephthalic acid (TPA),m-phthalic acid (MPA) was synthesized. It was symbolized by BP-LCP. Using a simi-lar method, a new copolymer BP-PSF was prepared. BP-PSF has a semi-flexible chainpolysulfone and a rigid-rod chain like BP-LCP. By FT-IR, polarizing microscope and DSCtechnique, the structures and properties of BP-LCP and BP-PSF were studied. | 杨宏丽 吴叙勤 李世瑨 | 1996 | Chinese Journal of Polymer Science1996，14，2： | 0 |
| 13 | STUDIES ON POLY(ETHYLENE TEREPHTHA LATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅰ.COMPOSITIONAL HOMOGENEITY显示文摘The compositional homogeneity of a poly (ethylene terephthalate)-poly (tetramethylene ether) multiblock copolymer sample with low content of hard segment was examined by GPC, TLC, and solubility method. The copolymer sample was found to have a uniform composition as a function of elution volume over the major portion of sample from GPC method. However within one elution fraction, the copolymer chains, although having the same hydrodynamic volume, may have some difference in composition. Two fractions with different composition were obtained by precipitation in ethanol. Some low molar mass copolymers were also separated by a TLC technique from the copolymer sample. | 詹永坚 应琦琮 吴美琰 钱人元 | 1991 | Chinese Journal of Polymer Science1991，9，2： | 0 |
| 14 | STUDIES ON POLY(ETHYLENE TEREPHTHALATE)-POLY(TETRAMETHYLENE ETHER) MULTIBLOCK COPOLYMER.Ⅱ.THE MOLAR SEGMENT MASS AND MOLAR MASS显示文摘The molar segment mass, weight-average molar mass, and molar mass distribution of a poly-(ethylene terephthalate)-poly (tetramethylene ether) multiblock copolymer sample were determined by the methods of proton nuclear magnetic resonance, low angle laser light scattering, and gel permeation chromatography. | 詹永坚 应琦琮 吴美琰 钱人元 | 1991 | Chinese Journal of Polymer Science1991，9，2： | 0 |
| 15 | Synthesis of Cobalt Containing Block Copolymers Via Ring Opening Metathesis Polymerizastion (ROMP)显示文摘In order to realize a metal containing nano-structure, a block-copolymer containing alkynyl groups in one block was designed and synthesized by living ring opening metathesis polymerization (ROMP) technique. The newly developed bis-3-bromopyridine complex of Grubbs catalyst was employed in the series of polymerization and it yielded the desired polymers with great molecular weight control and narrow polydispersities. The characteristics of the block copolymers were investigated by gel permeation chromatography, H- and 13H- NMR spectroscopy. Complexation of the alkynyl group containing block copolymers by treatment with dicobalt octacarbonyl occurred smoothly in 5 min at room temperature. GPC analysis before and after cobalt complexation indicated a significant increase of the hydrodynamic volume. AFM images of the films before and after the complexation also showed a noticeable change in its morphology where grain sizes become smaller and more regular upon complexation. | Bongjin Moon Minhyuk Kang | 2004 | Journal of Rare Earths2004，22，z2： | 0 |
| 16 | Block copolymer assisted topochemical polymerization:A facile and efficient route to robust polymeric nanoporous membranes decorated with versatile amino acids显示文摘Based on block copolymer assisted topochemical polymerization,a new strategy for facilely producing robust nanoporous membranes with controlled incorporation of functional groups onto nanopores is developed.As exemplified by preparing nanoporous polypyrrole decorated with amino acids,this strategy exhibits a high degree of freedom for tailoring the surface functionality in the created pores. | Yun Liang Wanyue Ouyang Peng Wang Wanlin Zhang Shiqiang Wang Li Tian Yong Ju Guangtao Li | 2020 | Chinese Chemical Letters2020，31，3： | 0 |
| 17 | STRUCTURE-PROPERTY RELATIONSHIP OF THERMOPLASTIC ELASTOMERS——BLOCK COPOLYMERS显示文摘Block copolymers are marked by alternation of hard blocks and soft blocks, whereby the hard blocks are believed to form crystalline domains in non-crystalline matrix formed by aggregation of the soft blocks and a fraction of the hard blocks escaping crystallization. On the basis of this two-phase model a number of studies has been made varying the nature and length of hard and soft blocks. After reviewing some papers published in this field, it may be concluded that the system in which properties of thermoplastic elastomers are exhibited can be generally divided into three catalogues, they are polyurethane, polyether-ester, polyesteramide elastomers. Structure-property relationship of these thermoplastic elastomers are given in this paper. | 李光 | 1997 | Journal of China Textile University(English Edition)1997，14，2： | 0 |
| 18 | SYNTHESIS OF POLYBUTADIENE MACROINITIATOR AND POLYBUTADIENE/POLYACRYLAMIDE BLOCK COPOLYMERS显示文摘An azo-group containing polybutadiene macroinitiator was prepared by Pinner synthesisand characterized by IR, NMR, GPC, viscosity and elemental measurements. Themacroinitiator was further used to polymerize acrylamide (AAm) in benzene to formpolybutadiene/polyacrylamide (PBD/PAAm) block copolymers. High conversion of AAm wasobtained over a wide range of monomer/macroinitiator ratios. The PBD/PAAm blockcopolymers.were found to have excellent solvent resistance. | 方天如 王家行 方政 刘沛妍 | 1995 | Chinese Journal of Polymer Science1995，13，3： | 0 |
| 19 | POLYCAPROLACTONE-POLY (ETHYLENE GLYCOL) BLOCK COPOLYMER Ⅲ DRUG RELEASE BEHAVIOR显示文摘The drug release behavior of degradable polymer--polycaprolactone-poly (ethyleneglycol)block copolymer(PCE) in vitro was investigated by using 5-Fluoro-uracil (5-Fu) asa model drug under a condition of pH 7. 4 at 37C. It is found that the release rate of 5-Fufrom PCE increased with increasing polyether content of the copolymer. The results showthat the increasing polyether content of the copolymer caused increasing hydrophilicity anddecreasing crystallinity of the PCE copolymer. Thus, the drug release behavior and thedegradable property of the PCE can be controlled by adjusting the composition of thecopolymer. | 贝建中 王智峰 王身国 | 1995 | Chinese Journal of Polymer Science1995，13，2： | 0 |
| 20 | SYNTHESES OF STYRENE-METHYL METHACRYLATE BLOCK COPOLYMER BY POLYAZOAMIDE AS INITIATOR显示文摘Polyazoamide(PAA) was used as initiator to prepare block copolymer P(MMA-b-St) byfree radical polymerization. The fraction of block copolymer was about 50%. The structureof the block-copolymer was characterized by IR and the results of ~1H-NMR and GPCshowed that the content of the block and the molecular weight (M_w) of the prepolymerand block copolymer could be controlled by varying the mol ratio of styrene/PAA andMMA/prepolymer. DSC and TEM results revealed that the block copolymer has twoseparated glass transition temperatures and phase separation within the domain structure. | 王忠义 魏德卿 | 1996 | Chinese Journal of Polymer Science1996，14，3： | 0 |
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