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MICROPHASE SEPARATED STRUCTURES AND PROPERTIES OF PDMS-MDIPEG copolymer SURFACE

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Chinese Journal of Polymer Science 2009年第3期27卷 327-334页

作者：方红霞 Department of Chemistry Huangshan University Department of Materials Science and the Advanced Coatings Research Center of China Educational Ministry Fudan University

A series of poly(dimethylsiloxane)(PDMS)-4,4′-diphenylmethanediisocyanate(MDI)-poly(ethylene glycol)(PEG) multiblock copolymers were synthesized by employing two-step growth polymerization and investigated by AFM,XPS. contact angle system,protein adsorption and platelets adhesion measurements,*** was found that as the molecular weight of PDMS increased,the surface of copolymers had increasing phase separation,while the increase in the molecular weight of PEG decreased the phase separation extents of the copolymer *** and contact angle measurements showed that the greater the phase separation extent was,the lower both the surface enrichment of PDMS and the surface free energy of the copolymer film *** protein adsorption experiments indicated that the best phase separation did not exhibit the best biocompatibility.

关键词： Microphase separated structure multiblock copolymer PDMS-PEG-MDI Protein adsorption

Radiation Crosslinking of Pol ysulfone-Pol ysiloxane multiblock copolymers

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Chemical Research in Chinese Universities 1992年第3期8卷 273-277页

作者： CHEN Xin-fang, ZHANG Chun-shan and CHUI Zhan-chen (Institute of Materials Science, Jilin University, Changchun)LI Bin-yao (Changchun Institute of Applied Chemistry, Academia Sinica, Changchun)

In this paper the effects of irradiation on the structures and properties of polysul-fone-polysiloxane multiblock copolymers and its important applied prospects are studied in detail.

关键词： Radiation-crosslinking Polysulfone Polydimethylsiloxane multiblock copolymer

Translocation of Heterogeneous Flexible Polymers Assisted by Binding Particles

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Chinese Journal of Polymer Science 2020年第7期38卷 784-790,I0008页

作者： Wan-Cheng Yu Department of Physics School of PhysicsBeihang UniversityBeijing 100191China

A polymer chain usually contains two or more types of monomeric species from the perspective of polymer chemistry,which poses achallenge to the understanding of structure-property *** is of course true in the field of polymer *** the present work,Iinvestigate the translocation dynamics of heterogeneous flexible polymers composed of two types of monomers labeled A and B through ananopore assisted by binding particles(BPs)by using the coarse-grained Langevin dynamics simulations in two-dimensional ***,multiblock copolymers with different block lengths and monomeric components are considered.I critically examine how thetranslocation dynamics responds to the variations in the block length and the monomeric ***,it is found that the periodicstructure of a multiblock copolymer causes an obvious fingerprint feature in the residence time of individual monomers in which the number ofpeaks is exactly equal to the number of *** findings provide a basic understanding about the sequence-dynamics relationship for theBPs-assisted translocation of heterogeneous flexible polymers.

关键词： Polymer translocation multiblock copolymer Binding particles Langevin dynamics simulations