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Synthesis and characterization of surface-active polymers derived from naturally occuring polysaccharides 2010-2012.

机译:天然存在的多糖衍生的表面活性聚合物的合成和表征2010-2012。

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摘要

Surfactants based on renewable resources and 'greener' synthetic routes have become a major focus of researchers worldwide. Although the surfactant industry uses the term 'natural surfactant' to indicate the presence of bio-based ingredients in their product lines, the industry as a whole still heavily relies on petrochemical feed stocks and harsh chemical synthesis for the manufacture of surfactants. In addition, after use, most commercially available surfactants are either non-biodegradable or degrade to produce more toxic products as in the case of Nonylphenol ethoxylates (NPEs).;In an attempt to design and develop non-toxic, bio-derived and biodegradable surfactants, this research demonstrates the possibility of converting abundantly available polysaccharides such as (polygalacturonic acid) [PGA] and algae (alginic acid) into 'greener' surfactants. The hydrophilic modification of polysaccharides using taurine (2-aminoethane sulfonic acid) is carried out in an environmentally benign one-pot reaction to yield surface-active polymeric surfactants. Structural characterization, surface activity, acid/base stability, temperature stability, and wettability of this new class of polysaccharide-based surfactants are presented.;These novel polysaccharide-based surfactants exhibit cleaning and stain removal efficiency comparable to commercial surfactants such as Triton X-100 and sodium lauryl sulfate, specifically towards hydrophilic dirt. This research establishes a general methodology for synthesis of surface-active polysaccharides, opening new possibilities in the area of sustainable and non-toxic surfactants.
机译:基于可再生资源和“绿色”合成路线的表面活性剂已成为全球研究人员的主要关注点。尽管表面活性剂行业使用术语“天然表面活性剂”来表示其产品系列中存在生物基成分,但整个行业仍然严重依赖石油化工原料和苛刻的化学合成方法来制造表面活性剂。另外,使用后,大多数市售的表面活性剂要么是不可生物降解的,要么会降解以产生更多有毒的产品,例如壬基酚乙氧基化物(NPE)。;试图设计和开发无毒,可生物衍生和可生物降解的表面活性剂表面活性剂,这项研究证明了将丰富的多糖如(聚半乳糖醛酸)[PGA]和藻类(藻酸)转化为“绿色”表面活性剂的可能性。使用牛磺酸(2-氨基乙烷磺酸)对多糖进行亲水改性是在环境友好的一锅法反应中进行的,以产生表面活性的聚合物表面活性剂。介绍了这类新型的基于多糖的表面活性剂的结构表征,表面活性,酸/碱稳定性,温度稳定性和润湿性。这些新型的基于多糖的表面活性剂具有与商业表面活性剂(如Triton X- 100和十二烷基硫酸钠,专门用于亲水性污垢。这项研究建立了合成表面活性多糖的通用方法,为可持续和无毒表面活性剂领域开辟了新的可能性。

著录项

  • 作者

    Mohd Aris, Zarif Farhana.;

  • 作者单位

    University of Massachusetts Lowell.;

  • 授予单位 University of Massachusetts Lowell.;
  • 学科 Plastics.
  • 学位 M.S.
  • 年度 2012
  • 页码 113 p.
  • 总页数 113
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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