發(fā)布時(shí)間：2018-03-20 17:40

  本文選題：咪唑聚離子液體　切入點(diǎn)：陰離子交換膜　出處：《高分子材料科學(xué)與工程》2017年03期 　論文類(lèi)型：期刊論文

【摘要】：以聚甲基丙烯酸甲酯嵌段聚乙烯基咪唑?yàn)楸?低聚倍半硅氧烷(POSS)為核的星型嵌段共聚物POSS-(PMMA-bPVIm)8為基膜材料,通過(guò)季銨化反應(yīng)和離子交換過(guò)程對(duì)其進(jìn)行改性,制備2種咪唑聚離子液體嵌段不同的陰離子交換膜,分別記作PMV-1、PMV-2,研究其吸水率、溶脹度、離子交換容量、力學(xué)性能、電導(dǎo)率及耐堿性。結(jié)果表明,膜在90℃時(shí)仍保持適當(dāng)?shù)奈畯?qiáng)度,2種膜的吸水率分別為18.09%和25.81%,厚度方向溶脹度分別為25.31%,35.45%;30℃時(shí)PMV-1、PMV-2的離子交換容量分別為2.38 meq/g,3.12 meq/g,力學(xué)性能良好;2種膜室溫下均已具有良好的離子傳輸性能,90℃時(shí)電導(dǎo)率分別達(dá)44.02 m S/cm和255.0 m S/cm;耐堿性測(cè)試表明,含聚離子液體嵌段較短的膜PMV-1穩(wěn)定性較好,60℃強(qiáng)堿溶液中浸泡120 h后電導(dǎo)率下降不超過(guò)30%。
[Abstract]:The star block copolymer (POSS-(PMMA-bPVIm)8) was modified by quaternary ammonium reaction and ion exchange with poly (methyl methacrylate) block polyethylene imidazole as arm and oligomeric semi-siloxane polyimidazole as core. Two kinds of imidazole polyionic liquid anionic exchange membranes were prepared and recorded as PMV-1 and PMV-2 respectively. The water absorption, swelling degree, ion exchange capacity, mechanical properties, conductivity and alkali resistance of the membranes were studied. The water absorbency of the two kinds of membranes is 18.09% and 25.81 respectively at 90 鈩，

本文編號(hào)：1640126