کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5205441 | 1502930 | 2017 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The use of melt rheology and solution viscometry for degradation study of post-consumer poly(ethylene terephthalate): The effects of the contaminants, reprocessing and solid state polymerization
ترجمه فارسی عنوان
استفاده از ریولت مذاب و محلول ویسکومتری برای بررسی تخریب پلی اتیلن ترفتالات پس از مصرف کننده: اثرات آلاینده ها، پردازش مجدد و پلیمریزاسیون جامدات
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کلمات کلیدی
تنزل، پلی اتیلن ترفتالات رئوئولوژی، پلیمریزاسیون جامد بازیافت، آلاینده ها،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
Rheological measurements and intrinsic viscosity were performed to determine how the presence of contaminants, reprocessing and solid state polymerization (SSP) affects the degradation of post-consumer poly(ethylene terephthalate) (PET). First, post-industrial PET resin was contaminated with a series of surrogates according to a US-FDA protocol to simulate the worst-case scenario of misuse of PET packaging. The samples were submitted to recycling and SSP process in the presence of surrogates. The rheological data demonstrated that contaminated samples present degradation, even without any additional process. However, when the contaminated samples are submitted to melt extrusion the level of degradation increases. For the SSP process it was found that the surrogates do not interfere in the degradation process. In addition, an empirical analysis was derived based on the existing relationship. This analysis allowed the use of complex viscosity in higher frequencies, that is, out of the Newtonian plateau, and it shows to be as efficient as the zero-shear rate viscosity, allowing to associate the molar mass index of different samples. The data were corroborated from those obtained by the viscometric molar mass index, highlighting the importance of this new method to quantify the degradation in the polymer system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 60, July 2017, Pages 236-241
Journal: Polymer Testing - Volume 60, July 2017, Pages 236-241
نویسندگان
S.A. Cruz, C.H. Scuracchio, L.B. Fitaroni, Ã.C. Oliveira,