کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11027054 1666328 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chain extension of poly (butylene adipate-co-terephthalate) and its microcellular foaming behaviors
ترجمه فارسی عنوان
زنجیره ای از پلی (بوتیل آدیتات-تترفاتال) و رفتارهای فوم آن ها
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
A facile chain extension and solid-phase batch foaming method was proposed to prepare microcellular poly (butylene adipate-co-terephthalate) (PBAT) foams in the presence of supercritical CO2. Branching structure and micro cross-linking structure were generated in modified PBAT with styrene-acrylonitrile-glycidyl methacrylate terpolymer (SAG) as chain extender, which was confirmed by Fourier transform infrared spectra, gel permeation chromatography and gel fraction measurements. The intrinsic viscosity and branching degree of modified PBAT increased as well as their viscoelasticity was improved respectively, with the SAG content increasing. The crystallization temperature and crystallinity of various PBAT samples increased and then decreased slightly due to the heterogeneous nucleation effect of branching points and the generation of cross-linking structure. An interesting complex cellular structure was observed in modified PBAT foams with the SAG content of 1 and 3 wt%, owing to the different rheological properties in branching molecular chain regions and linear molecular chain regions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 157, November 2018, Pages 143-152
نویسندگان
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