کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189608 | 1381189 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Telechelic polylactones functionalized with trimethoxysilyl groups
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Telechelic poly(ε-caprolactone)s or poly(d,l-lactide)s were prepared by SnOct2-initiated polymerization of ε-caprolactone (εCL) or d,l-lactide (d,l-LA) coinitiated with 1,4-butane diol or tetra(ethylene glycol). These telechelic polyesters were in situ functionalized with 3-isocyanatopropyl trimethoxysilane (IPTMS) by SnOct2-catalized addition of the OH-endgroups. Analogously, star-shaped polyesters were synthesized and functionalized using 1,1,1-trishydroxymethyl propane or pentaerythritol as coinitiators. All functionalized polymers were characterized by 1H NMR and MALDI-TOF mass spectra. In crosslinking experiments with oligo(ethylene-glycol)s the trimethoxysilyl groups proved to be 10-30-fold more reactive than triethoxysilyl end-capped polyesters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 26, 12 December 2005, Pages 12103-12108
Journal: Polymer - Volume 46, Issue 26, 12 December 2005, Pages 12103-12108
نویسندگان
Hans R. Kricheldorf, Heiko Hachmann ThieÃen,