LOW-FRICTIONAL CATHETER MATERIALS BY PHOTOINDUCED GRAFT-POLYMERIZATION
LOW-FRICTIONAL CATHETER MATERIALS BY PHOTOINDUCED GRAFT-POLYMERIZATION
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DOI：
10.1016/0142-9612(91)90135-w
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发表时间：
1991-01-01
期刊：
影响因子：
14
通讯作者：
IKADA, Y
中科院分区：
文献类型：
--
作者：
UYAMA, Y;TADOKORO, H;IKADA, Y
为开发低摩擦导尿管，采用光引发法在乙烯-醋酸乙烯酯共聚物（伊娃）和聚氯乙烯（PVC）薄膜和管材上接枝N，N-二甲基丙烯酰胺（DMAA）。 它们的表面变得非常光滑，当材料用来自低压汞灯的紫外线预照射，然后在少量核黄素存在下与DMAA接枝聚合而不脱气时。 尽管在伊娃膜和管之间的表面润滑性方面没有观察到显著差异，但是后者需要用于接枝聚合的附加程序，即，去除管内部捕获的空气。 发现用DMAA接枝的伊娃和PVC管的表面在潮湿条件下对PVC和硅酮表面表现出约0.5 N的摩擦力，而未接枝的管对相同基材的摩擦力对于PVC和伊娃分别为10 N和20 N。
To develop low-frictional catheters, photo-induced graft polymerization of N,N-dimethylacrylamide (DMAA) was performed on to films and tubes of ethylene-vinyl acetate copolymer (EVA) and poly(vinyl chloride) (PVC). Their surfaces became very slippery, when the materials were preirradiated with UV from a low-pressure mercury lamp, followed by graft polymerization with DMAA in the presence of small amount of riboflavin without degassing. Although no significant difference was observed in surface lubrication between the EVA film and the tube, the latter required an additional procedure for the graft polymerization, that is, removal of air trapped inside the tube. The surfaces of EVA and PVC tubes grafted with DMAA were found to exhibit frictional forces around 0.5 N against a PVC and a silicone surface under wet conditions, whereas the frictional force of the ungrafted tubes against the same substrates was 10 and 20 N for PVC and EVA, respectively.