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Well-Defined Amphiphilic Poly(p-dioxanone)-grafted Poly(vinyl alcohol) Copolymers: Synthesis and Micellization
A series of amphiphilic biodegradable and biocompatible poly(p-dioxanone)-grafted poly(vinyl alcohol) (PVA) copolymers with well-defined structure were obtained by a three-step synthesis based on the "grafting from" concept. The first step (protection step), called the partial silylation of PVA hydroxyl groups, was accomplished by 1,1,1,3,3,3-hexamethyl-disilazane and catalyst chlorotrimethylsilan...
http://www.polymer.cnt//ss/wugang/publicationsshow_7830.html |
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Thermal properties and non-isothermal cry-stallization behavior of biodegradable poly(p-dioxanone)/poly(vinyl alcohol) blends
Blends of two biodegradable semicrystalline polymers, poly(p-dioxanone) (PPDO) and poly(vinyl alcohol) (PVA) were prepared with different compositions. The thermal stability, phase morphology and thermal behavior of the blends were studied by using thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC). From the TGA data, it can be seen tha...
http://www.polymer.cnt//ss/wugang/publicationsshow_7826.html |
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Copolymerization of poly (vinyl alcohol)-graft-poly (1, 4-dioxan-2-one) with designed molecular structure by a solid-state polymerization method
Poly(vinyl alcohol)-graft-poly(1,4-dioxan-2-one) (PVA-g-PPDO) with designed molecular structure was synthesized by a solid-state polymerization. The solid-state copolymerization was preceded by a graft copolymerization of PDO initiated with PVA as a multifunctional initiator, and Sn(Oct)(2) as a coininitiator/catalyst in a homogeneous molten state. The polymerization temperature was then decreased...
http://www.polymer.cnt//ss/wugang/publicationsshow_7825.html |
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Effect of a small amount of poly(3-hydroxybutyrate) on the crystallization behavior of poly(L-lactic acid) in their immiscible and miscible blends during physical aging
Effect of a small amount of poly(3-hydroxybutyrate) on the crystallization behavior of poly(L-lactic acid) in their immiscible and miscible blends during physical aging
http://www.polymer.cnt//ss/zhangjianming/publicationsshow_7724.html |
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Green Poly(ε-caprolactone) Composites Reinforced with the Electrospun Polylactide/Poly(ε-caprolactone) Blend Fiber Mats
ACS Sustainable Chemistry & Engineering 2014, 2(9), 2102-2110
ABSTRACT:
As two typical aliphatic polyesters, biodegradable poly(ε-caprolactone) (PCL) and polylactide (PLA) show quite different mechanical properties. Compounding them together is therefore an interesting topic on the fabrication of biomaterials with tailorable properties. The composite technology was used in...
http://www.polymer.cnt//ss/wudefeng/publicationsshow_7478.html |
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Synthesis and drug release of star shape poly(benzyl L-aspartate)-b-poly(ethylene glycol) copolymers with POSS cores
Star shape amphiphilic block copolymers with polyhedral oligomeric silsesquioxanes as cores were synthesized using the “arm-first” strategy. Firstly, the block copolymer poly(benzyl L-aspartate)-b-poly(ethylene glycol) (PBLA-b-PEG) was synthesized via ring-opening polymerization of β-benzyl L-aspartate-N-carboxyanhydride (BLA-NCA) with α-Methoxy-ω-aminopoly(ethylene glycol) (mPEG-NH2) as a ma...
http://www.polymer.cnt//ss/hebin/publicationsshow_7266.html |
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Drug release of pH-sensitive poly(L-aspartate)-b-poly(ethylene glycol) micelles with POSS cores
Amphiphilic poly(L-aspartate)-b-poly(ethy1ene glycol) block copolymers were synthesized and immobilized on polyhedral oligomeric silsesquioxanes (POSS) to receive star shape copolymers. 1-(3-Aminopropyl) imidazole was conjugated on the pendant groups of poly(L-aspartate) segments to fabricate pH-sensitive micelles. Anticancer drug doxorubicin (DOX) was trapped in the micelles to investigate the ef...
http://www.polymer.cnt//ss/hebin/publicationsshow_7265.html |
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Compatibilization of polyamide 6/poly(2,6-dimethyl-1,4-phenylene oxide) blends by poly(styrene-co-maleic anhydride)
The properties of polyamide 6 (PA6)/poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends compatibilized by poly(styrene-co-maleic anhydride) (SMA) were studied. The addition of SMA can form an in situ copolymer, SMA-graft-PA6. The SMA-graft-PA6 copolymer actually plays a key role as a compatibilizer to improve the interface between PA6 and PPO. It was found that the effect of compatibilization resu...
http://www.polymer.cnt//ss/zpfang/publicationsshow_7240.html |
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Influence of poly(butylenes adipate-co-terephthalate) on the properties of the biodegradable composites based on ramie/poly(lactic acid)
Ramie/poly(lactic
acid) (PLA) composites were prepared by using two-roll mill. Poly(butylenes adipate-co-terephthalate)
was added into the composites, and the effect of PBAT on the mechanical
properties and thermal properties of the composites was investigate. The tensile
and flexural strength decreased with the increase of PBAT content, and the
addition of a small amount of PBAT increased the imp...
http://www.polymer.cnt//ss/taoyu/publicationsshow_7211.html |
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Preparation and characterization of biodegradable poly(lactic acid)-block-poly(ε-caprolactone) multiblock copolymer
Biodegradable copolymers of poly(lactic acid)-block-poly(e-caprolactone) (PLA-b-PCL) were successfully prepared by two steps. In the first step, lactic acid monomer is oligomerized to low molecular weight prepolymer and copolymerized with the (e-caprolactone) diol to prepolymer, and then the molecular weight is raised by joining
prepolymer chains together using 1,6-hexamethylene diisocyanate (HDI)...
http://www.polymer.cnt//ss/taoyu/publicationsshow_7209.html |
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