کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5191314 | 1381230 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of A-B-A triblock copolymers derived from chloro-telechelic poly(l-lactide): combining ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and characterization of A-B-A triblock copolymers derived from chloro-telechelic poly(l-lactide): combining ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP) Synthesis and characterization of A-B-A triblock copolymers derived from chloro-telechelic poly(l-lactide): combining ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP)](/preview/png/5191314.png)
چکیده انگلیسی
Ring-opening polymerization (ROP) of l-lactide was combined with atom transfer radical polymerization (ATRP) to produce well-defined linear block copolymers. Poly(l-lactide) (PLLA) was synthesized via ROP using ethylene glycol as an initiator and stannous octoate as a catalyst. The isolated hydroxy-telechelic PLLA was reacted with thionyl chloride and pyridine in toluene to afford chloro-telechelic PLLA (Cl-PLLA-Cl). The latter was employed as a macroinitiator in the synthesis of A-B-A triblock copolymers having either tert-butyl acrylate or benzyl acrylate outer blocks. Outer-block molecular weight was targeted by the mole ratio of monomer (acrylate) to the PLLA chloride initiating sites. The actual incorporation of acrylate into the triblock copolymer was lower than the molar feed ratio as the copolymer became increasingly less soluble upon conversion of acrylate in all cases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 11, 11 May 2005, Pages 3628-3638
Journal: Polymer - Volume 46, Issue 11, 11 May 2005, Pages 3628-3638
نویسندگان
Jamie M. Messman, Adam D. Scheuer, Robson F. Storey,