北京化工大学学报（自然科学版）
北京化工大學學報（自然科學版）
북경화공대학학보（자연과학판）
JOURNAL OF BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY(NATURAL SCIENCE EDITION)
2009年
6期
38-42
,共5页
种子乳液聚合%热处理%核壳聚合物%原子力显微镜
種子乳液聚閤%熱處理%覈殼聚閤物%原子力顯微鏡
충자유액취합%열처리%핵각취합물%원자력현미경
seeded emulsion polymerization%heat treatment%core-shell polymer%AFM
以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)和苯乙烯(St)为单体,采用半连续种子乳液法,合成了PS/P(MMA-BA)聚合物乳液.通过粒径分布、DSC和透射电镜(TEM)表征了乳胶粒结构,并利用原子力显微镜(AFM)对不同温度处理下的乳胶粒子结构及形态变化进行了研究.结果表明,合成的聚合物乳液为反相核壳结构;随着热处理温度的升高,乳胶粒子的结构和形态发生明显的变化,出现粒子的变形、融合并发生正反核壳的翻转.
以甲基丙烯痠甲酯(MMA)、丙烯痠丁酯(BA)和苯乙烯(St)為單體,採用半連續種子乳液法,閤成瞭PS/P(MMA-BA)聚閤物乳液.通過粒徑分佈、DSC和透射電鏡(TEM)錶徵瞭乳膠粒結構,併利用原子力顯微鏡(AFM)對不同溫度處理下的乳膠粒子結構及形態變化進行瞭研究.結果錶明,閤成的聚閤物乳液為反相覈殼結構;隨著熱處理溫度的升高,乳膠粒子的結構和形態髮生明顯的變化,齣現粒子的變形、融閤併髮生正反覈殼的翻轉.
이갑기병희산갑지(MMA)、병희산정지(BA)화분을희(St)위단체,채용반련속충자유액법,합성료PS/P(MMA-BA)취합물유액.통과립경분포、DSC화투사전경(TEM)표정료유효립결구,병이용원자력현미경(AFM)대불동온도처리하적유효입자결구급형태변화진행료연구.결과표명,합성적취합물유액위반상핵각결구;수착열처리온도적승고,유효입자적결구화형태발생명현적변화,출현입자적변형、융합병발생정반핵각적번전.
A latex polymer with an inverse core-shell structure has been synthesized by semi-continuous seed emulsion polymerization using methyl methacrylate (MMA), butyl acrylate (BA) and styrene (St) as monomers. The core-shell structure was confirmed by means of DSC and TEM. The polymer was investigated by AFM, and the internal structure was observed after heat treatment. The measurements showed that the morphology of the latex particle underwent considerable changes on increasing the temperature, with coalescence and reversal of core and shell.
