NOPR Collection:

Acetylation of Sunhemp Fibre and Its Characteristics

1987-09-01T00:00:00Z

Title: Acetylation of Sunhemp Fibre and Its Characteristics Authors: Chand, Navin; Verma, Sudha; Khazanchi, A C Abstract: The effects of acetylation on the structure and properties of acetylated sunhemp fibres were studied by scanning electron microscopy, tensile testing and IR techniques. Acetylation did not affect the tensile strength much, but smoothened the fibre surface and reduced hygroscopicity. Page(s): 162-163

Stress-Strain Properties of Sodium Thioglycollate Treated Wool in Air and Water

1987-09-01T00:00:00Z

Title: Stress-Strain Properties of Sodium Thioglycollate Treated Wool in Air and Water Authors: Parthasarathy, S; Chopra, S K; Bapna, D L; Singh, U S Abstract: The fibres of Australian Merino, Chokla and Malpura sheep wools were treated with sodium thiogIycollate solution of 0.5 M at 10.0 pH for 24 h at 0°C.The untreated and treated fibres were tested for stress-strain properties in air (65 ± 5% RH and 27 ± 2°C) and in water (27 ± 2°C). The different parameters of the stress-strain curve were analyzed taking into consideration their dependence on the tex value of the fibres. The genetic groups differed in certain characteristics. Also, the interaction was significant in many others. The treatment in general weakened the stress-strain parameters as the thioglycollate reduces the disulphide bonds in wool fibre. The percentage change in parameters differed among the breeds. Page(s): 158-161

Scanning Electron Microscopic Studies on Microbial Softening of Barky Jute

1987-09-01T00:00:00Z

Title: Scanning Electron Microscopic Studies on Microbial Softening of Barky Jute Authors: Basak, M K; Sao, K P; Bhaduri, S K Abstract: Barky jute (W5 grade) was treated with the fungus Penicillium corylophilum Dierckx at 30 ± 1^ᵒC for 10 days. Both untreated and fungus-treated samples, examined under a scanning electron microscope, showed that the fungus grew mainly on the pectin present on the surface of the bark and in the region between the fibre strands, without affecting the cell walls of the fibres. Chemical analysis of the treated samples confirmed this. These observations accord with those of earlier workers. Page(s): 154-157

Physical and Structural Properties of Raw and Alkali-Treated Bhindi (Hibiscus esculentus L) Fibre

1987-09-01T00:00:00Z

Title: Physical and Structural Properties of Raw and Alkali-Treated Bhindi (Hibiscus esculentus L) Fibre Authors: Sen, K K; Saha, S C; Ray, P K Abstract: Gravimetric fineness, tenacity and fine structural properties like degree of crystallinity and average angle of orientation of raw and chemically-treated bhindi (Hibiscus esculentus L) fibres were studied. The bhindi fibre appears to be inferior to jute in respect of these properties. On alkali treatment, the fibre undergoes partial transformation to cellulose II like any other lignocellulosic fibres. Page(s): 152-153