کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
637623 | 1456151 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Construction of comb-like poly(N-isopropylacrylamide) layers on microporous polypropylene membrane by surface-initiated atom transfer radical polymerization
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Construction of comb-like poly(N-isopropylacrylamide) layers on microporous polypropylene membrane by surface-initiated atom transfer radical polymerization Construction of comb-like poly(N-isopropylacrylamide) layers on microporous polypropylene membrane by surface-initiated atom transfer radical polymerization](/preview/png/637623.png)
چکیده انگلیسی
In this paper, we describe a thermo-responsive membrane based on microporous polypropylene membrane (MPPM). Comb-like poly(N-isopropylacrylamide) (PNIPAM) was grafted onto the MPPM surface using surface-initiated atom transfer radical polymerization (ATRP). Hydroxyl groups were firstly introduced onto the membrane surface by the ultraviolet-induced graft polymerization of 2-hydroxyethyl methacrylate. Then ATRP initiators were immobilized through the reaction between the tethered hydroxyl groups and 2-bromoisobutyryl bromide, which initiated the ATRP of NIPAM on the membrane surface. Attenuated total reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and field emission scanning electron microscopy were used to characterize the chemical composition and surface morphologies of the modified membranes. The thermo-response of the modified membranes was evaluated by water contact angle and water permeation measurements. It is found that both water contact angles and water fluxes have obvious response to the environmental temperature. This type of membrane with controlled PNIPAM graft layer can be applied in many fields including smart separation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 327, Issues 1â2, 5 February 2009, Pages 174-181
Journal: Journal of Membrane Science - Volume 327, Issues 1â2, 5 February 2009, Pages 174-181
نویسندگان
Ling-Shu Wan, Yun-Feng Yang, Jing Tian, Meng-Xin Hu, Zhi-Kang Xu,