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Carboxylic modification of welan gum

机译：Welan Gum的羧基改性

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摘要

Welan gum has disadvantages such as poor solubility, low viscosity, and poor crosslinking property, when it is applied in petroleum industry, comparing to guar gum. Two methods for the carboxylic modification of welan gum were developed, carboxyethyl modification and citric acid modification, to improve the solubility in water, viscosity, and crosslinking ability of welan gum in the borax crosslinking system. The solubility time of carboxyethyl modified and citric acid modified welan gum were shortened to 30 and 90 min, respectively. The highest viscosity of citric acid modified product was 49.4 mPa s, the viscosity after crosslinking was raised at least 1.2 times to the highest four times than that before crosslinking. The results indicated three factors affecting the properties of modified products: (1) how many function groups in the modifying agent; (2) the way to connect the function group; and (3) the whole structure of the modifying agent. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48301.
机译：当它在石油工业中施用时，Welan Gum具有较差的溶解度，低粘度和不良交联性能，如粘性胶。开发了两种羧基改性的方法，开发了羧乙基改性和柠檬酸改性，以改善硼砂交联体系中柔软胶水，粘度和交联能力的溶解度。羧乙酯改性和柠檬酸改性柔软胶的溶解度分别缩短至30至90分钟。柠檬酸改性产物的最高粘度为49.4MPa S，交联后的粘度升高至少1.2倍至比交联在交联之前的最高四次。结果表明，影响改性产品性质的三个因素：（1）修改剂中有多少个功能组; （2）连接功能组的方法; （3）改性剂的整个结构。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,48301。

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  • 来源
    《Journal of Applied Polymer Science》 |2020年第4期|共11页
  • 作者

    Li Xin; Liu Zhuang; Zhu LunYu; Miao ShanShan; Fang Zheng; Zhao LiHuan; Guo Kai;

  • 作者单位

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

    China Petr &

    Chem Corp Beijing Res Inst Chem Ind 14 Beisanhuan Rd E Beijing 100013 Peoples R China;

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Biotechnol &

    Pharmaceut Engn 30 Puzhu Rd S Nanjing 211816 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    oil and gas; structure-property relations; Welan gums;

    机译：石油和天然气;结构 - 财产关系;威尔曼牙龈;

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