CAJ | 학술논문

以丙烯酸异冰片酯(IBOA)为单体、梳状水性聚氨酯(CWPU)预聚物为分散剂,制备了梳状水性聚氨酯/聚丙烯酸异冰片酯(CWPU/PIA)共聚乳液.采用傅里叶变换红外光谱分析、透射电镜分析、粒径分析和接触角测定等方法研究了丙烯酸异冰片酯含量对共聚乳液性能的影响.结果表明:CWPU/PIA共聚乳液的粒子呈一种以CWPU为壳、PIA为核的核-壳结构;粒子的粒径随IBOA含量的增加而增大,当IBOA含量小于40%时,CWPU/PIA共聚乳液粒子的粒径小于150nm;IBOA含量对CWPU/PIA胶膜的表面接触角影响不大,但对吸水率影响显著,随着IBOA含量的增加,胶膜的吸水率降低,耐水性提高.
이병희산이빙편지(IBOA)위단체、소상수성취안지(CWPU)예취물위분산제,제비료소상수성취안지/취병희산이빙편지(CWPU/PIA)공취유액.채용부리협변환홍외광보분석、투사전경분석、립경분석화접촉각측정등방법연구료병희산이빙편지함량대공취유액성능적영향.결과표명:CWPU/PIA공취유액적입자정일충이CWPU위각、PIA위핵적핵-각결구;입자적립경수IBOA함량적증가이증대,당IBOA함량소우40%시,CWPU/PIA공취유액입자적립경소우150nm;IBOA함량대CWPU/PIA효막적표면접촉각영향불대,단대흡수솔영향현저,수착IBOA함량적증가,효막적흡수솔강저,내수성제고.
Comb-branched waterborne polyurethane/poly(isobornyl acrylate) (CWPU/PIA) copolymerization emulsion was prepared, with isobornyl acrylate (IBOA) as the monomer and with CWPU as the dispersant. Then, the effect of IBOA content on the properties of CWPU/PIA copolymerization emulsion was analyzed by means of FT-IR, TEM, particle size distribution and contact angle measurements. The results show that (1) the particles in CWPU/PIA copolymerization emulsion possess a core-shell structure with CWPU as the shell and with PIA as the core;(2) the particle size increases with the IBOA content;(3) at a IBOA content of less than 40%, the average particle size of CWPU/PIA copolymerization emulsion is below 150nm;(4) IBOA content has no obvious influence on the contact angle of CWPU/IBOA film, but it greatly affects the water absorptivity;and (5) with the increase in IBOA content, the water absorptivity of the films decreases while the water resistance improves.