The Combination of Itaconic Acid and Sodium Hypophosphite as a New Cross-Linking System for Cotton

Abstract

In this research, we studied cross-linking of cotton fabrics using the combination of itaconic acid (ITA) and sodium hypophosphite (NaH 2 PO 2 ). ITA, a bifunctional carboxylic acid, was able to esterify cotton cellulose to form a single ester linkage, but it was not able to form cross-linking between two cellulose molecules. In the presence of NaH 2 PO 2 , the amount of ester formed on cotton fabric was increased substantially and the esterification temperature of ITA was reduced. Therefore, NaH 2 PO 2 functioned as a catalyst for esterification of cotton by ITA. Moreover, we found that wrinkle resistance of the cotton fabric was significantly improved when cotton fabrics were treated with the combination of ITA and NaH 2 PO 2 .We also found that phosphorus was bound to the treated cotton fabric and that the increase in the wrinkle recovery angle of the treated fabric was correlated to the increase in the amount of phosphorus bound to cotton. All the data indicated that H−P−H of sodium hypophosphite probably reacts with the >CC< of two ITA molecules, which are also esterified with cellulose, thus forming a cross-linkage between the two cellulose molecules. The cotton fabrics treated with the ITA/NaH 2 PO 2 system demonstrated a high level of durable press performance with significantly lower tensile strength loss than those treated with the formaldehydebased dimethyloldihydroxyethyleneurea.

High strength paper production based on esterification of thermomechanical pulp fibers in the presence of poly(vinyl alcohol)

“…In addition, BTCA was found to be more effective than CA. The use of polycarboxylic acid to esterify cellulose and the esterification mechanism were shown by others in the literature ( Zhou et al, 1995 , Peng et al, 2012 ).…”

Polymer-grafted modification of cotton fabrics by SI-ARGET ATRP

“…This inexpensive, biodegradable, and renewable resource has been widely studied during the past decades. Efforts to improve the wrinkle recovery properties and handle of cotton fabrics have never stopped [1][2][3], and many attempts have been made to enhance functionalities of cotton fabrics such as antimicrobial ability [4][5][6], superhydrophobicity or/and superoleophilicity [7,8], self-cleaning property [9,10], UV radiation protection ability [11], flame retardancy [12,13], electrical conductivity or capacitive performance [14,15]. Textile products with multiple functionalities or stimuli-responsive (smart) property have generated great interest in recent years [16][17][18].…”

Preparation and Characterization of DOPO-ITA Modified Ethyl Cellulose and Its Application in Phenolic Foams

“…The FT-IR analysis of DOPO-ITA: 1704 cm −1 (C=O); 1608 cm −1 , 1595 cm −1 and 1581 cm −1 (phenyl); 1429 cm −1 (P-phenyl), 1245 cm −1 (P=O), 913 cm −1 (P-O-phenyl). The FT-IR analysis of ITA [39]: 1682 cm −1 (C=O); 1623 cm −1 (C=C). Compared with the spectrum of DOPO, the characteristic peak of P-H (in DOPO-ITA) disappeared at 2385 cm −1 .…”