CAJ | 학술논문

以十二烷基苯磺酸(DBSA)为插层剂改性蒙脱土(MMT),制得了有机蒙脱土(OMMT).采用原位插层聚合法,以OMMT、八甲基环四硅氧烷、乙烯基三甲氧基硅烷以及甲基丙烯酸酯甲酯、丙烯酸丁酯和丙烯酸为原料,制备了有机硅丙烯酸酯/蒙脱土纳米复合乳液.考察了OMMT用量对乳胶粒径及乳胶膜性能的影响,并对OMMT及乳胶膜的结构进行了表征.结果表明:当OMMT的用量为2.0%时,乳胶粒子尺寸为纳米级,乳胶膜的耐热性以及各项物理机械性能均得到明显改善.XRD分析表明,MMT变为OMMT后,其层间距从1.23nm增大至1.54nm.FT-IR分析表明,有机硅和丙烯酸酯单体在OMMT层间发生接枝聚合反应.
이십이완기분광산(DBSA)위삽층제개성몽탈토(MMT),제득료유궤몽탈토(OMMT).채용원위삽층취합법,이OMMT、팔갑기배사규양완、을희기삼갑양기규완이급갑기병희산지갑지、병희산정지화병희산위원료,제비료유궤규병희산지/몽탈토납미복합유액.고찰료OMMT용량대유효립경급유효막성능적영향,병대OMMT급유효막적결구진행료표정.결과표명:당OMMT적용량위2.0%시,유효입자척촌위납미급,유효막적내열성이급각항물리궤계성능균득도명현개선.XRD분석표명,MMT변위OMMT후,기층간거종1.23nm증대지1.54nm.FT-IR분석표명,유궤규화병희산지단체재OMMT층간발생접지취합반응.
Montmorillonite(MMT)was modified with dodecylhenzene sulfonate acid(DBSA)as intercalating agent and organphilic montmorillonite(OMMT)was obtained.Organosilicorr-acrylate/montmorillonite nanocomposite emulsions were prepared from OMMT,octamethyl cyclotetrasiloxane,vinyl trimethoxy silane,methyl methacrylate,butyl acrylate and acrylic acid by means of in-situ intercalative polymerization.The effect of OMMT amount on the size of latex particles and the performance of latex film were discussed and the structure of OMMT and latex particles was characterized.The results showed that when the amount of OMMT was 2.0%,the size of the latex particles were nanometer degree,the heat resistance and physical mechanical properties of latex films were improved remarkably.XRD analysis showed that when MMT was modified into OMMT,the interlayer distance increased to 1.54nm from 1.23nm.FT-IR analysis showed that the graft polymerization reaction between silicone and acrylate monomers occurred in the interlayers of OMMT.