کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9808695 | 1517354 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
How to maintain the morphology of styrene-divinylbenzene copolymer beads during the sulfonation reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: How to maintain the morphology of styrene-divinylbenzene copolymer beads during the sulfonation reaction How to maintain the morphology of styrene-divinylbenzene copolymer beads during the sulfonation reaction](/preview/png/9808695.png)
چکیده انگلیسی
This work aims to describe the use of acetyl sulfate as sulfonating reagent of microporous beads based on styrene (STY) and divinylbenzene (DVB) which were prepared by aqueous suspension copolymerization. The copolymer was chemically modified by two different sulfonating agents, namely sulfuric acid and acetyl sulfate which is prepared “in situ” by mixing acetic anhydride and sulfuric acid. The morphologic features of resin beads were analyzed by optical microscopy (OM) and by scanning electron microscopy (SEM). The sulfonic group incorporation into the copolymer network was verified by infrared spectroscopy (FTIR) and quantified by using a standardized NaOH solution. The bead morphology maintenance depends on the sulfonating agent and reaction conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issues 8â9, April 2005, Pages 1089-1094
Journal: Materials Letters - Volume 59, Issues 8â9, April 2005, Pages 1089-1094
نویسندگان
Ana Jaqueline Barreto de Oliveira, Alcino Palermo de Aguiar, Mônica Regina Marques Palermo de Aguiar, Luiz Claudio de Santa Maria,