THE STUDIES OF EFFECT OF THE DIFlFERENT SOLVENTS AND COMPOSITIONS ON THE DISTRIBUTION OF SUBSTITUENT ALONG CARBOXYMETHY-LCELLULOSE CHAIN

CHENG Fa; LI Guifeng; LI Dongli; ZHANG Xiaohong; ZHANG Jingwu

doi:null

您当前的位置：

首页 >

文章列表页 >

THE STUDIES OF EFFECT OF THE DIFlFERENT SOLVENTS AND COMPOSITIONS ON THE DISTRIBUTION OF SUBSTITUENT ALONG CARBOXYMETHY-LCELLULOSE CHAIN

Research Article | 更新时间：2021-03-19

- THE STUDIES OF EFFECT OF THE DIFlFERENT SOLVENTS AND COMPOSITIONS ON THE DISTRIBUTION OF SUBSTITUENT ALONG CARBOXYMETHY-LCELLULOSE CHAIN
- Acta Polymerica Sinica Issue 5, Pages: 539-544(1996)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 October 1996，
扫描看全文
CHENG Fa, LI Guifeng, LI Dongli, ZHANG Xiaohong, ZHANG Jingwu. THE STUDIES OF EFFECT OF THE DIFlFERENT SOLVENTS AND COMPOSITIONS ON THE DISTRIBUTION OF SUBSTITUENT ALONG CARBOXYMETHY-LCELLULOSE CHAIN. [J]. Acta Polymerica Sinica (5):539-544(1996)
DOI：

CHENG Fa, LI Guifeng, LI Dongli, ZHANG Xiaohong, ZHANG Jingwu. THE STUDIES OF EFFECT OF THE DIFlFERENT SOLVENTS AND COMPOSITIONS ON THE DISTRIBUTION OF SUBSTITUENT ALONG CARBOXYMETHY-LCELLULOSE CHAIN. [J]. Acta Polymerica Sinica (5):539-544(1996) DOI：

摘要

用电位滴定法测定了在不同溶剂中生成的羧甲基纤维素（ＣＭＣ）完全酶降解和酸水解后的还原端基数

计算出反映ＣＭＣ一条分子链上取代基分布的参数

如取代及未取代葡萄糖单元（ＡＧＵ）的链段长度、单取代及双取代百分数等

并考察了这些ＣＭＣ耐酸性

表明熔剂种类与取代基沿ＣＭＣ分子链的分布密切相关

研究了在异丙醇－水体系内生成的ＣＭＣ

醇和水的比例对取代基分布的影响

发现在异丙醇含量为７５－９５％范围内

随用量增大

ＣＭＣ取代度升高

取代基沿分子链分布更均一。

Abstract

The number of reducing end of carboxymethylcellulose (CMC) produced in thedifferent solvents has been experimentally determined by potentiometry after completeenzymic degradation or acid hydrolysis．Parameters relating to the distribution of substituent along CMC chain

such as the average length of substituted or unsubstitutedanhydroglucose units (AGU)

the percentage of monosubstituted or disubstituted units

etchave been calculated

and the resistance to acid of these CMC was studied．It shows thatthe solvents are dosely telated to this distribution of substituent．Also

the effect of differ-ent compositions of i—propanol/water on the distribution of substitufion of CMC hasbeen studied．When the content of i—propanol changed from 75％ to 95％

it was foundthat the degree of substitution of CMC increases

and that the uniformity of the distritufionof substitution iS better with the increasing concentration of i—propanol.

关键词

羧甲基纤维素取代基分布溶剂葡萄糖单元电位滴定

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

THE STUDY OF DISTRIBUTION OF SUBSTITUENTS OF CARBOXYMETHYL CELLULOSE PRODUCED IN MEDIUM C 6H 6 C 2H 5OH

SORPTION AND DIFFUSION OF ORGANIC SOLVENTS IN POLY(BUTADIENE/ACRYLONITRILE) BASED POYLURETHANE

SWELLING BEHAVIOR OF MODIFIED CMC HYDROGEL PREPARED BY RADIATION CROSSLINKING

SYNTHESIS AND CHARACTERIZATION OF THE GRAFT COPOLYMERS OF CARBOXYMETHYLCELLULOSE WITH ACRYLAMIDE AND DIALLYLLAURYLAMINE

INFLUENCE OF BLOCK STRUCTURE ON CONFORMATION AND PROPERTIES OF CARBOXYMETHLY CELLULOSE SERIES OF POLYMERIC SURFACTANTS

Related Author

No data

Related Institution

No data

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰