TT2401 QUALITY ASSURANCE IN CHEMICAL PROCESSING ANNA UNIVERSITY SYLLABUS

UNIT I 9

Role of Quality and Process Control: Selection and standardization of incoming raw

materials – Auxiliaries evaluation of the end products. Development of auxiliary products

for in house consumption Major areas of process and quality control bleaching, dyeing,

printing and finishing

UNIT II 9

Determination of impurities of natural and man made fibres – cotton; wax content, ash

content, colouring matter, Silk – Degumming – Wool percentage of vegetable impurities,

oils and greases. Synthetic materials – fibre finishes. Evaluation of desizing efficiency

residual size content – Evaluation of scouring efficiency drop absorbency, residual wax,

weight loss, degree of impurities.

UNIT III 9

Evaluation of bleaching – degree of whiteness, change in mechanical properties,

presence of carboxyl groups and aldehyde groups, fluidity, ash content, uniformity of

grey preparation. Evaluation of mercerisation – deconvolution count, lustre, change in

mechanical properties, barium activity number, change in dye absorbency.

UNIT IV 9

Quality evaluation of dyed / printed materials, colour fastness to washing, light, crock

(dry and wet), perspiration, bleaching, sublimation, uniformity of dyeing, shade matching.

Quality evaluation of finished fabric for water repellancy, air permeability, stiffness,

crease, flame resistance, anti static and soil release.

UNIT V 9

Brief introduction to testing instruments for above methods and quality standards, ISO,

AATCC Computer Colour Matching: Theory – Concepts and recipe production.

TEXTBOOKS

1. Shenai V A “Evaluation of Textile Chemicals” Sevak Publication, Bombay, 1980.

2. Vaidya, S. S. Trivedi “Textile Auxiliaries and Finishing Chemicals”, Publication,

ATIRA, Ahmedabad.

REFERENCES

1. Chemical Processing Tablet “Process and Quality Control in Chemical Processing”-

TAI, Publication, 1984.