- 1、本文档共4页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
Cellulose.doc
Cellulose (纤维素)
Uses: wood, fibers (cotton, rayon, flax, hemp), component of shampoo thickeners Monomer: glucose Morphology: crystalline
Cellulose is one of many polymers found in nature. Wood, paper, and cotton all contain cellulose. Cellulose is an excellent fiber. Wood, cotton, and hemp rope are all made of fibrous cellulose. Cellulose is made of repeat units of the monomer glucose. This is the same glucose which your body metabolizes in order to live, but you cant digest it in the form of cellulose. Because cellulose is built out of a sugar monomer, it is called a polysaccharide.
glucose (葡萄糖)
Cellulose has an important place in the story of polymers because it was used to make some of the first synthetic polymers, like cellulose nitrate, cellulose acetate, and rayon.
Cellulose Nitrate
The very first derivative of cellulose came about when a scientist reacted cellulose, in the form of cotton, with nitric acid. The result was cellulose nitrate.
Often times, as soon as something is invented, the first thing we do is figure out a way to use it to kill people. Such is the case with cellulose nitrate. Cellulose nitrate, also called gun cotton, turned out to be a powerful explosive. It soon replaced common gunpowder as the explosive charge in the ammunition for rifles and artillery. It worked so well that in the First World War, we were capable of killing ten million people in only four short years.
In all fairness to cellulose nitrate, it was also used for peaceful purposes. You see, even back then, there was concern that Africas elephant herds were disappearing far too quickly, and a replacement needed to be found for ivory in billiard balls. Cellulose nitrate is also a thermoplastic, and was quickly used to make the balls for the worlds pool halls. The only problem was every once in awhile one of these would explode during the break.
Cellulose nitrate was also used to make an early polymer containing composite material, safety glass. This was a sandwich ma
您可能关注的文档
最近下载
- 必威体育精装版人教版小学六年级下册音乐全册教案.doc
- 汽车构造拆装实习报告.pdf VIP
- 《分香蕉》优质课课件(北师大版数学二年级上册).pptx VIP
- 天然气蒸汽锅炉安全操作规程.docx
- 防防呆法防错法IE七大手法演示文稿.ppt VIP
- 幼儿园大班数学活动《小动物住新房》.ppt VIP
- 党的二十届三中全会精神测试题300道(单选、多选、判断、填空).docx VIP
- 劳动项目七 洗碗筷(课件)二年级下册劳动人教版.ppt
- 医院综合病房楼空调系统施工组织设计方案范本.doc
- 平方根与立方根的运算专项训练(20题)-重要笔记七年级数学下学期重要考点练习(人教版)(含答案析).docx
文档评论(0)