CAJ | 학술논문

采用悬浮聚合法合成了LMA(甲基丙烯酸十二酯)均聚树脂、BMA(甲基丙烯酸正丁酯)/LMA共聚树脂、BMA/HEMA(甲基丙烯酸( 羟乙酯)共聚树脂、BMA/DVB(二乙烯基苯)共聚树脂以及BMA/HEMA/LMA共聚树脂.研究了单体种类、交联剂种类以及用量与树脂吸附性能、交联密度间的关系,利用FT-IR对树脂试样的化学结构进行了表征.结果表明,与LMA均聚物相比,BMA被引入大分子主链后,BMA/LMA共聚树脂对煤油的吸附量大大降低,对甲苯和三氯乙烯的吸附量增大,而BMA/LMA/HEMA共聚树脂对煤油、甲苯和三氯乙烯的吸附量均有所下降;化学交联型树脂的吸附量随时间变化较小,物理交联型树脂其吸附量随时间变化较为明显;物理交联剂HEMA的质量分数影响树脂的三维网状结构,进而影响树脂的吸附性能;树脂大分子间存在氢键作用,有利于物理交联结构的形成,长侧链LMA结构单元的引入,促使侧链间发生缠结甚至结晶,进一步增强了物理交联结构.
채용현부취합법합성료LMA(갑기병희산십이지)균취수지、BMA(갑기병희산정정지)/LMA공취수지、BMA/HEMA(갑기병희산( 간을지)공취수지、BMA/DVB(이을희기분)공취수지이급BMA/HEMA/LMA공취수지.연구료단체충류、교련제충류이급용량여수지흡부성능、교련밀도간적관계,이용FT-IR대수지시양적화학결구진행료표정.결과표명,여LMA균취물상비,BMA피인입대분자주련후,BMA/LMA공취수지대매유적흡부량대대강저,대갑분화삼록을희적흡부량증대,이BMA/LMA/HEMA공취수지대매유、갑분화삼록을희적흡부량균유소하강;화학교련형수지적흡부량수시간변화교소,물리교련형수지기흡부량수시간변화교위명현;물리교련제HEMA적질량분수영향수지적삼유망상결구,진이영향수지적흡부성능;수지대분자간존재경건작용,유리우물리교련결구적형성,장측련LMA결구단원적인입,촉사측련간발생전결심지결정,진일보증강료물리교련결구.
LMA homopolymer, BMA/LMA copolymer, BMA/HEMA copolymer, BMA/DVB copolymer and BMA/HEMA/LMA copolymer were synthesized by suspension polymerization. The influences of varieties of monomers and crosslinking agents, along with dosage of crosslinking agents on absorptive property and crosslinking density of resin were investigated. Chemical structure of samples was characterized by FT-IR. The results show that compared with LMA homopolymer, kerosene absorbency of BMA/LMA copolymer decreases while absorbencies for toluene and trichloroethylene increase after introducing BMA into main chain;for BMA/LMA/HEMA copolymer, absorbencies for kerosene, toluene and trichloroethylene decrease after introducing BMA into main chain. Absorbency of chemical crosslinking resin changes slightly, but the absorbency of physical crosslinking resin changes obviously with increasing absorptive time. The mass fraction of HEMA can affect absorptive property due to its effect on three dimensional network structure of the resin. Hydrogen bonding interactions exist and are beneficial to forming physical crosslinking structure, LMA structural units can promote entanglement and crystallization of side chain as LMA is introduced into main chain, which can further strengthen the physical crosslinking structure.