Q. What is percentage accessibility of rayon measured by exchange of hydroxyl hydrogens for deutrium?

View solution

Q. Polymers including those used in fibers can be crystallized from dilute solution to give

View solution

Q. From melt or more concentrated solution, bulk crystallization of polymers lead to

View solution

Q. Strength of textile yarn not only depends on fibre length but also on extent to which fibre

View solution

Q. Paracrystals uniform disorder can be replaced by

View solution

Q. In lamellar crystals, chain molecules are folded

View solution

Q. What is value of density in wood pulp?

View solution

Q. Mean value of some correlation function relating position of neighboring chains is called as

View solution

Q. What is value of periodate oxidation in regenerated cellulose?

View solution

Q. Modified fringed micelle structure has at ends of each micelle a mixture of

View solution

Q. Percentage accessibility of sulphite pulp measured by exchange of hydroxyl hydrogens for deutrium is

View solution

Q. Value of degree of order ranges to unity for

View solution

Q. Polymer that crystallize in lamellar form linked by tie molecules is called as

View solution

Q. Fibre properties can be predicted from knowledge of

View solution

Q. Value of moisture regain in wood pulp is calculated to be

View solution

Q. In electron microscopy, with stiffer molecules one can observe

View solution

Q. When there is no room for branches of spherulitic structure to grow, then it becomes

View solution

Q. In polymers, annealing requires small crystals to melt down and

View solution

Q. Type of spherulitic structure that may occur in nylon is

View solution

Q. What is percentage accessibility of mercerised cotton measured by exchange of hydroxyl hydrogens for deutrium?

View solution