کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9559310 | 1381159 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of the porous network developed during curing of thermoset blends containing low molar weight saturated polyester
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study of the porous network developed during curing of thermoset blends containing low molar weight saturated polyester Study of the porous network developed during curing of thermoset blends containing low molar weight saturated polyester](/preview/png/9559310.png)
چکیده انگلیسی
Polymerisation of unsaturated polyester/styrene blend added with a thermoplastic additive leads to the formation of a porous biphasic polymer network. In this paper, the porous medium was specifically studied by TEM associated with images analysis by chord length distribution and small angle X-ray scattering (SAXS). When the molar weight and/or the amount of low profile additive (LPA) are sufficient to ensure porosity higher than 2%, chord length distribution can be performed and is characteristic of a Debye random medium and Porod's law was observed in SAXS. The lengths deduced from Porod's law are similar to those observed for Debye random regime and are lower than 50Â nm. These characteristics are closely related to the processes happening during curing and especially to the phase separation. For less porous samples, deviation from Porod's law was observed and could be attributed to additional scattering intensity coming from concentration fluctuations within polymer matrix. For nonporous samples, scattering intensity was only due to concentration fluctuations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 3, 26 January 2005, Pages 661-669
Journal: Polymer - Volume 46, Issue 3, 26 January 2005, Pages 661-669
نویسندگان
N. Boyard, M. Vayer, C. Sinturel, R. Erre, P. Levitz,