Tear strength theory of semicrystalline polymers | Zendy

Rohn C. L. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

Tear strength theory of semicrystalline polymers

Author(s) -

Rohn C. L.

Publication year - 1983

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1983.070281001

Subject(s) - crystallinity , polyethylene , amorphous solid , polymer , materials science , thermodynamics , lattice (music) , composite material , polymer chemistry , crystallography , physics , chemistry , acoustics

A theroretical model describing how the tear strenght of semicrystalline polymers depends upon the interaction of the crystalline and amorphous phases is presented. It is based upon the “freevolume“ theory and a “Hooke's law ‐lattice energy” treatment. The strength T M is hypothesized to be partitioned between the crystalline Q c and amorphous Q a phases. Therefore T M ∝ Q c . Q a , T M = T o . Q c . Q a , where Q c = NKTE / bY 2 and e −v/vf = G / G oτ . Proof of this theory is obtained by measuring the oxygen transmission rates of 11 polyethylene film samples varying in tear strenght. Good agreement exists between T M (experimental) and T M (theroetical) for 9 of the polyethylene samples. The other 2 Samples differ from the theory by factor of 2. One explantion of this departure is the τ varies from unity.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research