本文主要研究内容
作者张航（2019）在《基于水凝胶涂层法的聚四氟乙烯微孔膜亲水改性研究》一文中研究指出：目前,水污染和水资源短缺问题已严重威胁到人们的生命安全。长期以来,水污染问题的治理一直成为环保学界关注的焦点,膜技术因其工艺的绿色环保、可持续性、分离过程迅速高效率性等优点已作为主流治理的方式之一,取得良好的效果。PTFE微孔膜材料以其优异的耐化学试剂、高孔隙率、机械性能好等优点一直受到国际学者的关注和研究。但PTFE微孔膜由于其表面能低,疏水性高等特点,极大的限制了它在水处理领域的应用。因此,提高PTFE微孔膜的亲水性能已成为研究的重点方向。本文以聚乙烯醇（PVA）和壳聚糖或氧羧甲基壳聚糖为亲水剂,采用不同的交联剂通过交联反应在PTFE微孔膜纤维包裹一层水凝胶亲水涂层,从而实现PTFE微孔膜的亲水改性。具体开展了如下两部分研究:（1）选用亲水性好的聚乙烯醇（PVA）与抗菌性能好的壳聚糖（CS）为材料,在碱性条件下通过环氧氯丙烷的交联作用形成水凝胶涂层与原位嵌入SiO2纳米颗粒的方法相结合改性PTFE微孔膜。实验结果表明:改性PTFE微孔膜的纤维表面包裹着一层水凝胶,且水凝胶涂层与节点处还附着大量的固体颗粒,提升表面粗糙度,平均孔径和孔隙率略微减小;改性膜表面出现了羟基和氨基;改性膜表面出现了新的元素N,O,Si;随着PVA溶液浓度的增加,改性膜的水通量先升高后降低,膜表面的接触角是先下降后趋于稳定;随着反应时间的增加,改性膜的水通量先升高后下降;随着反应温度的增加,改性膜的水通量先升高后降低,膜表面的接触角先降低后升高;最佳反应条件为:PVA溶液浓度为1wt%,CS溶液浓度为0.3wt%,CS溶液与PVA溶液质量比为1:1.5,反应时间为6h,反应温度为40℃,反应pH=12,二次处理中的水稀释倍数为45倍（其中PBA:SiO2=1:2.5）。亲水改性PTFE微孔膜的接触角由136°降至48°,纯水通量达到了3172L·m-2·h-1。通过对亲水改性的PTFE微孔膜的水包油乳液分离实验结果表明:亲水改性的PTFE微孔膜具备良好的抗油污性能和油截留率97%。对亲水改性的PTFE微孔膜的物理和化学稳定性研究结果表明:亲水改性的PTFE微孔膜具备良好的耐酸性能和耐冲洗性能。（2）选用聚乙烯醇（PVA）与氧羧甲基壳聚糖（OCMCS）在酸性条件下用戊二醛进行交联反应对PTFE微孔膜进行亲水改性。研究结果表明:PTFE微孔膜的纤维表面包裹着一层水凝胶涂层,且微孔膜表面仍然保持原有的三维网状结构;亲水改性的PTFE微孔膜表面出现了亲水基团羟基和氨基;随着反应溶液中PVA含量的增加,改性膜水通量先增大后减小,接触角先减小后增大;随着反应温度的增加,改性膜水通量先增大后减小,接触角先减小后增大;随着反应时间的增加,改性膜水通量先增大后减小,接触角先减小后增大。最佳的实验条件为:OCMCS/PVA质量比为1:1,5wt%戊二醛和1wt%盐酸溶液的量分别为2.5mL和1mL,反应时间为6h,温度为50℃。所制备的PTFE-PVA/OCMCS膜具有更大的水通量为4480.89L·m-2·h-1,接触角为57.48°。对亲水改性的PTFE微孔膜的抗污染性能测试结果表明:PTFE-PVA/OCMCS膜具备良好的抗牛血清蛋白（BSA）吸附能力。长时间水洗实验结果表明:PTFE-PVA/OCMCS膜具备较好的物理稳定性。
Abstract
mu qian ,shui wu ran he shui zi yuan duan que wen ti yi yan chong wei xie dao ren men de sheng ming an quan 。chang ji yi lai ,shui wu ran wen ti de zhi li yi zhi cheng wei huan bao xue jie guan zhu de jiao dian ,mo ji shu yin ji gong yi de lu se huan bao 、ke chi xu xing 、fen li guo cheng xun su gao xiao lv xing deng you dian yi zuo wei zhu liu zhi li de fang shi zhi yi ,qu de liang hao de xiao guo 。PTFEwei kong mo cai liao yi ji you yi de nai hua xue shi ji 、gao kong xi lv 、ji xie xing neng hao deng you dian yi zhi shou dao guo ji xue zhe de guan zhu he yan jiu 。dan PTFEwei kong mo you yu ji biao mian neng di ,shu shui xing gao deng te dian ,ji da de xian zhi le ta zai shui chu li ling yu de ying yong 。yin ci ,di gao PTFEwei kong mo de qin shui xing neng yi cheng wei yan jiu de chong dian fang xiang 。ben wen yi ju yi xi chun （PVA）he ke ju tang huo yang suo jia ji ke ju tang wei qin shui ji ,cai yong bu tong de jiao lian ji tong guo jiao lian fan ying zai PTFEwei kong mo qian wei bao guo yi ceng shui ning jiao qin shui tu ceng ,cong er shi xian PTFEwei kong mo de qin shui gai xing 。ju ti kai zhan le ru xia liang bu fen yan jiu :（1）shua yong qin shui xing hao de ju yi xi chun （PVA）yu kang jun xing neng hao de ke ju tang （CS）wei cai liao ,zai jian xing tiao jian xia tong guo huan yang lv bing wan de jiao lian zuo yong xing cheng shui ning jiao tu ceng yu yuan wei qian ru SiO2na mi ke li de fang fa xiang jie ge gai xing PTFEwei kong mo 。shi yan jie guo biao ming :gai xing PTFEwei kong mo de qian wei biao mian bao guo zhao yi ceng shui ning jiao ,ju shui ning jiao tu ceng yu jie dian chu hai fu zhao da liang de gu ti ke li ,di sheng biao mian cu cao du ,ping jun kong jing he kong xi lv lve wei jian xiao ;gai xing mo biao mian chu xian le qiang ji he an ji ;gai xing mo biao mian chu xian le xin de yuan su N,O,Si;sui zhao PVArong ye nong du de zeng jia ,gai xing mo de shui tong liang xian sheng gao hou jiang di ,mo biao mian de jie chu jiao shi xian xia jiang hou qu yu wen ding ;sui zhao fan ying shi jian de zeng jia ,gai xing mo de shui tong liang xian sheng gao hou xia jiang ;sui zhao fan ying wen du de zeng jia ,gai xing mo de shui tong liang xian sheng gao hou jiang di ,mo biao mian de jie chu jiao xian jiang di hou sheng gao ;zui jia fan ying tiao jian wei :PVArong ye nong du wei 1wt%,CSrong ye nong du wei 0.3wt%,CSrong ye yu PVArong ye zhi liang bi wei 1:1.5,fan ying shi jian wei 6h,fan ying wen du wei 40℃,fan ying pH=12,er ci chu li zhong de shui xi shi bei shu wei 45bei （ji zhong PBA:SiO2=1:2.5）。qin shui gai xing PTFEwei kong mo de jie chu jiao you 136°jiang zhi 48°,chun shui tong liang da dao le 3172L·m-2·h-1。tong guo dui qin shui gai xing de PTFEwei kong mo de shui bao you ru ye fen li shi yan jie guo biao ming :qin shui gai xing de PTFEwei kong mo ju bei liang hao de kang you wu xing neng he you jie liu lv 97%。dui qin shui gai xing de PTFEwei kong mo de wu li he hua xue wen ding xing yan jiu jie guo biao ming :qin shui gai xing de PTFEwei kong mo ju bei liang hao de nai suan xing neng he nai chong xi xing neng 。（2）shua yong ju yi xi chun （PVA）yu yang suo jia ji ke ju tang （OCMCS）zai suan xing tiao jian xia yong wu er quan jin hang jiao lian fan ying dui PTFEwei kong mo jin hang qin shui gai xing 。yan jiu jie guo biao ming :PTFEwei kong mo de qian wei biao mian bao guo zhao yi ceng shui ning jiao tu ceng ,ju wei kong mo biao mian reng ran bao chi yuan you de san wei wang zhuang jie gou ;qin shui gai xing de PTFEwei kong mo biao mian chu xian le qin shui ji tuan qiang ji he an ji ;sui zhao fan ying rong ye zhong PVAhan liang de zeng jia ,gai xing mo shui tong liang xian zeng da hou jian xiao ,jie chu jiao xian jian xiao hou zeng da ;sui zhao fan ying wen du de zeng jia ,gai xing mo shui tong liang xian zeng da hou jian xiao ,jie chu jiao xian jian xiao hou zeng da ;sui zhao fan ying shi jian de zeng jia ,gai xing mo shui tong liang xian zeng da hou jian xiao ,jie chu jiao xian jian xiao hou zeng da 。zui jia de shi yan tiao jian wei :OCMCS/PVAzhi liang bi wei 1:1,5wt%wu er quan he 1wt%yan suan rong ye de liang fen bie wei 2.5mLhe 1mL,fan ying shi jian wei 6h,wen du wei 50℃。suo zhi bei de PTFE-PVA/OCMCSmo ju you geng da de shui tong liang wei 4480.89L·m-2·h-1,jie chu jiao wei 57.48°。dui qin shui gai xing de PTFEwei kong mo de kang wu ran xing neng ce shi jie guo biao ming :PTFE-PVA/OCMCSmo ju bei liang hao de kang niu xie qing dan bai （BSA）xi fu neng li 。chang shi jian shui xi shi yan jie guo biao ming :PTFE-PVA/OCMCSmo ju bei jiao hao de wu li wen ding xing 。
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论文作者分别是来自浙江理工大学的张航，发表于刊物浙江理工大学2019-05-08论文，是一篇关于微孔膜论文,交联反应论文,水凝胶涂层法论文,聚乙烯醇论文,亲水性论文,浙江理工大学2019-05-08论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自浙江理工大学2019-05-08论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
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