CAJ | 학술논문

采用端羟基聚丁二烯(HTPB)、端羟基聚丁二烯–苯乙烯共聚物(HTBS)和端羟基聚丁二烯–丙烯腈共聚物(HTBN)三种软段制备了聚氨酯(PUR)膜，利用红外光谱仪、差示扫描量热分析仪、热重分析仪表征了膜的结构和热性能；并以苯酚水溶液为目标体系，考察了三种膜的溶胀性以及渗透汽化分离性能。结果表明，HTPB–PUR膜具有最大的微相分离程度和耐热性；软段中的氰基会增大膜的溶胀度；HTBS–PUR膜具有最高的渗透性，而HTPB–PUR膜选择性最好；三种膜的总渗透通量、分离因子和渗透汽化分离指数均随进料温度升高而增加。
채용단간기취정이희(HTPB)、단간기취정이희–분을희공취물(HTBS)화단간기취정이희–병희정공취물(HTBN)삼충연단제비료취안지(PUR)막，이용홍외광보의、차시소묘량열분석의、열중분석의표정료막적결구화열성능；병이분분수용액위목표체계，고찰료삼충막적용창성이급삼투기화분리성능。결과표명，HTPB–PUR막구유최대적미상분리정도화내열성；연단중적청기회증대막적용창도；HTBS–PUR막구유최고적삼투성，이HTPB–PUR막선택성최호；삼충막적총삼투통량、분리인자화삼투기화분리지수균수진료온도승고이증가。
Three kinds of polyurthane (PUR) membranes were prepared with hydroxyl-terminated polybutadiene(HTPB), hydroxyl-terminated polybutadiene-acrylonitrile copolymer(HTBN) and hydroxyl-terminated polybutadiene-polystyrene copolymer(HTBS) as soft segments. Their structures and thermal properties were characterized by FTIR,DSC and TGA. The swelling properties and pervaporation performances were investigated with the mixture of phenol and water. The results showed that HTPB–PUR membrane demonstrates the highest degree of microphase separation and thermal stability. The nitrile-group in soft segment increases the swelling degree of PUR membrane. HTBS–PUR membrane shows the highest flux,while HTPB–PUR membrane possesses the best selectivity. The total fluxes,separation factor and pervaporation separation indexes of all membranes increase with increasing of feed temperature.