摘要
以氯化亚铜(CuCl)/2,2'-联吡啶(BPy)为催化配位体系,N,N-二甲基乙酰胺(DMAc)作为溶剂,通过原子转移自由基聚合(ATRP)法在聚氯乙烯(PVC)分子链上接枝烯丙基聚乙二醇(APEG)。X射线光电子能谱(XPS)、红外光谱(FT-IR)和核磁共振(1H-NMR)表明:APEG单体成功地接枝到了PVC链上;改性材料经相分离法制备过滤膜,膜的孔径分布范围为0.117μm^0.247μm,接触角在300 s内由81°下降至64.4°;0.05 MPa跨膜压差下,初始纯水通量为1677 L/(m2·h);牛血清蛋白(BSA)液过滤试验共循环3次,0.05 MPa跨膜压差下,首次循环初始通量为737 L/(m2·h),经3次循环后BSA通量稳定在101 L/(m2·h),显示出较好的抗污染性能。
Allyl polyethylene glycols （APEG） was grafted onto poly （ vinyl chloride） （PVC） via atom transfer radical polymerization （ATRP） method. PVC was solved in N ,N-dimethylacetamide （DMAc） and cuprous chloride （CuCl）/2,2＇-dipyridine （BPy） acted as the catalyst system in the reaction. The properties of the modified polymer were characterized by X-ray photoelectron spectroscopy （XPS）, Fourier transform infrared spectrometry （FT-IR） and 1H-NMR spectroscopy. These results indicate that APEG was successfully grafted onto PVC. This modified polymer was used to form a filtration membrane by phase-separation method. The pore size range is 0. 117μm- 0.247 μm. Water contact angle of the membrane surface decreases from 81 to 64.4 in 300s. The initial pure water flux under 0.05 MPa transmembrane pressure is 1677 L/（m^2. h）. The initial BSA solution flux under 0.05 MPa transmembrane pressure is 737 L/（m^2. h）,it declines to steady 101 L/（m^2. h） at the end of the three cycles.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2014年第1期145-148,共4页
Polymer Materials Science & Engineering
基金
宁波市自然科学基金资助项目(2012A610170)
浙江省自然科学基金资助项目(LY12B06001)
关键词
聚氯乙烯
原子转移自由基聚合
膜
改性
过滤
Keywords：poly（vinyl chloride）
atom transfer radical polymerization
membrane
modification
filtration
