• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Applications of bifunctional aldehydes to improve paper wet strength
【24h】

Applications of bifunctional aldehydes to improve paper wet strength

机译：应用双功能醛改善纸张湿强度

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Glyoxal and glutaraldehyde behave very differently for improving wet strength of paper. It is found that glyoxal is very efficient for improving temporary wet strength of paper without the presence of a catalyst and exposure to elevated temperatures, When a metal salt, such as Zn(NO3)(2), is used as a catalyst and the curing temperature is increased, the durable wet strength of glyoxal-treated paper increases at the expense of its flexibility, as shown by reduced stretch and folding endurance. Glutaraldehyde is not able to provide any improvement in wet strength to paper, even under high curing temperatures, provided no catalyst is used. With the aid of a metal salt catalyst, glutaraldehyde imparts excellent durable wet strength to paper without significantly sacrificing folding endurance, and the wet strength of glutaraldehyde-treated paper increases steadily as curing temperature increases. The different behavior of glyoxal and glutaraldehyde may be attributed to their different reactivity toward cellulose. (C) 2002 John Wiley Sons, Inc. [References: 21]
机译：乙二醛和戊二醛在改善纸的湿强度方面表现非常不同。发现乙二醛在不使用催化剂和不暴露于高温下的情况下对于提高纸张的暂时湿强度非常有效，当使用金属盐（例如Zn（NO3）（2））作为催化剂并固化时温度升高，乙二醛处理过的纸的持久湿强度以其柔韧性为代价增加，如降低的拉伸和折叠耐力所示。如果不使用催化剂，即使在较高的固化温度下，戊二醛也不能使纸张的湿强度得到任何改善。借助于金属盐催化剂，戊二醛赋予纸优异的持久湿强度，而不会显着牺牲耐折性，并且随着固化温度的升高，戊二醛处理过的纸的湿强度稳定地增加。乙二醛和戊二醛的不同行为可能归因于它们对纤维素的不同反应性。 （C）2002 John Wiley Sons，Inc. [参考：21]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号