+1 vote
in Food Packaging Technology by (63.0k points)
Which of the following paper has excellent wet strength?

(a) Bleached paper

(b) Vegetable parchment paper

(c) Kraft paper

(d) Waxed paper

I had been asked this question in semester exam.

My question is taken from Types of Paper topic in division Paper and Paper Based Packaging Materials of Food Packaging Technology

1 Answer

+2 votes
by (194k points)
selected by
 
Best answer
Correct choice is (b) Vegetable parchment paper

The best explanation: Vegetable parchment paper has excellent wet strength. It involves passing a web of high quality, unsized chemical pulp through a bath of concentrated sulfuric acid. The cellulosic fibers swell and partially dissolve, filling the interstices between the fibers and resulting in extensive hydrogen bonding. Thorough washing in water, followed by drying on conventional papermaking dryers, causes reprecipitation and consolidation of the network, resulting in a paper that is stronger wet than dry (it has excellent wet strength, even in boiling water), free of lint, odor and taste, and resistant to grease and oils.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...