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首页> 外文期刊>Journal of Polymer Research >Preparation and characterization of modified ultrafiltration nylon 6 membrane modified by poly (acrylamide-co-maleic anhydride)
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Preparation and characterization of modified ultrafiltration nylon 6 membrane modified by poly (acrylamide-co-maleic anhydride)

机译：聚（丙烯酰胺 - 二氧化马来酸酐改性改性超滤尼龙6膜的制备及表征

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摘要

In attempt to prepare modified ultrafiltration (UF) Nylon 6 membrane and improve its hydrophilicity and anti-fouling performance, poly (acrylamide-co-maleic anhydride)(AM-MA) was utilized as hydrophilic copolymer additive in the dope solution. The UF Nylon 6/AM-MA membranes were synthesized through blending Nylon 6 with poly(AM-MA) using a phasi-inversion process. Characterization of the prepared membranes for morphological studies and thermal behavior was carried out by SEM and DSC instruments respectively. The SEM photos demonstrated that by increasing the copolymer density in the dope solution, the morphology was changed from spongy to bi-continuous, composed of small interlocked and stick-like crystallites. FTIR/ATR and water contact angle data also confirmed the existence of AM-MA copolymer on the blend membranes surface. Furthermore, the effect of different molecular weights and concentration of hydrophilic copolymer on filtration performance and antifouling properties were experimentally studied. The results exhibited that the blend UF membranes possessed better water flux permeability than pure Nylon 6 membrane due to the increased surface hydrophilicity and porosity. Fouling resistance experiments revealed that the surface anti-fouling ability of the blend membranes was improved via the addition of AM-MA copolymer with lower MW (co 1) to the cast solution, while this parameter was weakened in higher MW of copolymer (co2).
机译：在尝试制备改性的超滤（UF）尼龙6膜并改善其亲水性和抗结垢性能方面，在涂料溶液中使用聚（丙烯酰胺 - 共马来酸酐）（AM-MA）作为亲水共聚物添加剂。通过使用序列反转方法将尼龙6与聚（AM-MA）混合的UF尼龙6 / am-mA膜合成。通过SEM和DSC仪器进行制备的形态学研究和热行为的制备膜的表征。 SEM照片显示，通过增加掺杂溶液中的共聚物密度，形态由海绵状变为双连续，由小互锁和粘性微晶组成。 FTIR / ATR和水接触角数据也证实了混合膜表面上的AM-MA共聚物的存在。此外，实验研究了不同分子量和亲水共聚物对过滤性能和防污性能的影响。结果表明，由于表面亲水性和孔隙率增加，共混物UF膜具有比纯尼龙6膜更好的水磁通渗透性。污垢抗性实验表明，通过向浇铸溶液中加入am-mA共聚物的添加Am-Ma共聚物来改善混合物膜的表面抗结垢能力，而该参数在较高Mw的共聚物（CO2）中削弱了该参数。

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