Polyester carpet pile close to commercial reality

Shell Chemical Co. have introduced a polytrimethylene terephthalate fibre into the market which is to be used in carpet pile. The will be the first polyester to be used in this application. The fibre combines the resilience and elastic recovery of nylon with the strain resistance of polyester. It is the first new fibre to be introduced to..

Extrusion and orientation process for an absorbable medical fiber

This paper describes a suitable process for the manufacture of medical fibres of monofilament type, comprising of the melt extrusion of dyed (violet) polydioxanone polymer containing 0.1? by weight of D and C Violet no.2. the subject polymers should have an inherent viscosity range of 1.79-1.92 dl/gr. Monofilaments produced are used in th..

Dyed aromatic polyamide fibers with improved light stability

The article details a novel method for dyeing modified aramid fibers and blends thereof with metallized and non-metallized acid or direct dyes with or without carriers. It offers coloured aramid fibers which exhibit good stability to light. The aramid fibers are modified by incorporating hindered amine stabilizers into the polymer chain d..

The study on degradation of chitosan molecular weight (Chinese)

In this study, three kinds of methods were used to degrade the molecular weight of Chitosan: Chitin reacted with high concentration NaOH solution at 100℃ and reaction time varied; Chitin reacted firstly with 5％ HCI solution at 100℃ and reaction time varied, the to be Chitosan by deacetylation; different concentration of H₂O solution(0..

Chitin and dibutyrylchitin fibers

Chitin is a natural polysaccharide with excellent bioactive properties, it is insoluble in common solvents due to its extensive hydrogen bonding and its highly crystalline structure. It is these properties that restrict many practical applications of chitin. Dibutyrylchitin (DBCH) is a product of chitin-O-butyrylation obtained in the pres..

Immature fibre content and fabric appearance

The application of AFIS Maturity Measurements in cotton yarn manufacturing is discussed. The paper uses experimental work to highlight one of the problems related to the composition of bale laydowns, namely the control of immature fibre content. Recommendations are made for their composition: the difference between the average value for t..

Enzyme for scouring cotton

Nagase and Co is to market an enzyme that helps produce softer cotton products and reduces costs. The enzyme is used instead of conventional caustic soda for the de-gumming of cotton. Called proctopectinase, it decomposes pectin and is secreted by a microbe belonging to the Bacillus genus, it was discovered by Professor Takuo Sakai of Kin..

Regenerated silk fibroin - a review

This review covers literature dealing with the regeneration of silk polymer from silk fibre. The silk fibre used is that could not be used in the production of continuous thread, and waste collected during processing. The subjects covered include the classification of waste silk, separation of the polymer from the waste, properties of sil..

Water-repellent staple fibres for thermal bonded coverstock

A hydrophobic fibre has been developed by FiberVisions to improve diaper and adult incontinence products. Called HY-Repel the fiber has superior hydrophobic properties and the use of it in woven products is said to offer: good protection against leakage; a water-repellent outer layer; increased user comfort due to the fibre's softness and..

Anti-bacterial fibre contains urea peroxide

A fiber has been developed for use in medical and hygiene products that contains hydrogen peroxide. Urea peroxide is used as a bacteria-retardant and as a deodorant to remove smells such as those from formaldehyde, phenol, hydrogen sulphide, and carbon disulphide. The amount of urea peroxide is adjusted in the viscose fibre containing pol..