Enhanced washing durability of hydrophobic coating on cellulose fabric using polycarboxylic acids

Wenqi Huang, Yanjun Xing, Yunyi Yu, Songmin Shang, Jinjin Dai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)

Abstract

Nine polycarboxylic acids were used to improve washing durability of hydrophobic cellulose fabric finished by sol-gel method. By simultaneous forming ester-bridge between cellulose and silica layer by ester bond, polycarboxylic acids could anchor silica coating onto cellulose fabric to strengthen the adhesion of organic-inorganic hybrid coating. The wettability of treated fabrics was characterized by water contact angle, spray test and hydrostatic pressure test. The results showed that all investigated polycarboxylic acids could improve the durability. The polycarboxylic acid with proper distance between terminal carboxylic acid groups and number of carboxylic acid groups showed the highest durability. 1,2,3,4-butanetetracarboxylic acid (BTCA) led to the best durability of hydrophobic cellulose fabric with water contact angle of 137.6° (recovery percentage of 94.2%) after 30 washing times. The effect of BTCA on durability was characterized by scanning electron microscopy. This study demonstrated that the surface treatment using polycarboxylic acids and mixed organosilanes is a promising alternative for achieving durable hydrophobic fabrics.
Original languageEnglish
Pages (from-to)4443-4448
Number of pages6
JournalApplied Surface Science
Volume257
Issue number9
DOIs
Publication statusPublished - 15 Feb 2011

Keywords

  • Cotton
  • Durability
  • Hydrophobicity
  • Polycarboxylic acid
  • Sol-gel

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

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