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Isothermal Cold Crystallization and Melting Behaviors of Poly(L-lactic acid)s Prepared by Melt Polycondensation.
The isothermal cold crystallization and melting behaviors of poly(L-lactic acid)s (PLLAs, weight average molecular weight, Mw, 6000–80,000) prepared via melt polycondensation were studied with differential scanning calorimeter in this work. It is found that the crystallization rate increased with decreasing Mw, reached a maximum at Mw of ca. 21,000 and then decreas...
http://www.polymer.cn//ss/wulinbo/publicationsshow_936.html |
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Early Stage Interplay of Microphase Separation and Crystallization in Crystalline-Coil Poly(L-lactic acid)-block-polystyrene Thin Films
The interplay of microphase separation and crystallization has been investigated at the early stage of annealing the amorphous thin films of the crystalline-coil poly(L-lactic acid)-blockpolystyrene (PLLA-b-PS) diblock copolymer. The homogeneous and heterogeneous films were annealed at the temperatures between the glass transition temperature of PS (TgPS) and the melting point of PLLA (TmPLLA) so ...
http://www.polymer.cn//ss/fujun/publicationsshow_818.html |
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Lamella reorientation in thin films of a symmetric poly(L-lactic acid)-blockpolystyrene upon crystallization at different temperatures
The thin films of a symmetric crystalline-coil diblock copolymer of poly(L-lactic acid) and polystyrene (PLLA-b-PS) formed lamellae parallel to the substrate surface in melt. When annealed at temperatures well above the glass transition temperature of PLLA block (Tg PLLA), the PLLA chains started to crystallize, leading to reorientation of lamellae. Such reorientation behavior exhibited dependence...
http://www.polymer.cn//ss/fujun/publicationsshow_815.html |
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Effect of clay on the morphology of binary blends of polyamide 6 with high density polyethylene (HDPE) and HDPE-graft-acrylic acid
Z. Fang, Y. Xu, L. Tong. Polym. Eng. Sci., 2007.5, 47(5): 551-559
http://www.polymer.cn//ss/zpfang/publicationsshow_791.html |
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聚乳酸接枝物的合成及对聚乳酸/淀粉共混物性能的影响
关键字：Polylactic acid, Glycidyl methacrylate, Grafting copolymer, Polylactic acid/starch blend Compatibility
聚乳酸(PLA)具有良好的生物相容性、热塑性、可加工性和优良的物理机械性能, 但由于其成本比较高, 广泛应用受到限制。
http://www.polymer.cn/research/dis_info13609 |
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Influence of the microstructures of porous electrospun poly-(lactic-co-glycolic acid)/carbon nanotubes composite nanofibers and macroporous films on the growth of fibroblast cells
关键字：poly(lactic-co-glycolic acid),Multi-walled carbon nanotubes,nanofibers,macroporous films
Porous polymer nanofibers and macroporous polymer membranes have been generally used as tissue engineering scaffolds. However, the effect of the microstructures related to different porous materials on the cell growth and proliferation rema...
http://www.polymer.cn/research/dis_info11572 |
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THE PREPARATION AND CHARACTERIZATION OF POLY(METHACRYLAMIDE-CO-ACRYLIC ACID) GEL AND ITS USE IN THE THE NON-COMPETITIVE HEAVY METAL REMOVAL
关键字：THE,PREPARATION,AND,CHARACTERIZATION,POLY,METHACRYLAMIDE,ACRYLIC,ACID,GEL,AND,ITS,USE,THE,THE,NON,COMPETITIVE,HEAVY,METAL,REMOVAL,
Poly(methacrylamide-co-acrylic acid), P(AA-co-MAAM), gel was prepared in the presence of N,N-methylenebisacrylamide (NMBA) as cross-linking agent in water at 60oC for 24 hours. The molar percentages of AA and MAAM in feed were 80 and&n...
http://www.polymer.cn/research/dis_info5752 |
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Preparation and Charaterization of New nanocomposite materials based on poly (L-lactic acid) - poly (εpsilon-caprolactone) and organo-modified montmorillonites
关键字：Preparation,Charaterization,New,nanocomposite,materials,based,poly,lactic,acid,poly,psilon,caprolactone,organo,modified,montmorillonites,
New nanocomposites were prepared by melt blending poly (L-lactic acid) (PLLA),poly (ε-caprolactone) (PCL), and organically modified montmorillonite (OMMT).
http://www.polymer.cn/research/dis_info5649 |
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DEVELOPMENT OF ACID SENSITIVE VINYL ETHER LINKED POLY(ETHYLENE GLYCOL) LIPID CONJUGATES AND THEIR UTILIZATION FOR EFFICIENT LIPOSOMAL DRUG DELIVERY
关键字：DEVELOPMENT,ACID,SENSITIVE,VINYL,ETHER,LINKED,POLY,ETHYLENE,GLYCOL,LIPID,CONJUGATES,AND,THEIR,UTILIZATION,FOR,EFFICIENT,LIPOSOMAL,DRUG,DELIVERY,
DePEGylation using dioleolyl phosphatidylethanolamine (DOPE) and cleavable poly(ethylene glycol) (PEG) lipid conjugates is a promising strategy for liposomal drug delivery[1].
http://www.polymer.cn/research/dis_info5581 |
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MISCIBILITY, MELTING AND CRYSTALLISATION BEHAVIOUR OF BIODEGRADABLE POLY(HYDROXYBUTYRATE) AND POLY(D,L-LACTIC ACID) BLENDS USING TEMPERATUREMODULATED DIFFERENTIAL SCANNING CALORIMETRY
关键字：MISCIBILITY,MELTING,AND,CRYSTALLISATION,BEHAVIOUR,BIODEGRADABLE,POLY,HYDROXYBUTYRATE,AND,POLY,LACTIC,ACID,BLENDS,USING,TEMPERATUREMODULATED,DIFFERENTIAL,SCANNING,CALORIMETRY,
Biodegradable poly(3-hydroxybutyrate) (PHB) and poly(D,L-lactic acid) (RPLA) can be blended to reduced toughness of PHB for practical applications.
http://www.polymer.cn/research/dis_info2442 |
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