Measuring Tie Chains and Trapped Entanglements in Semicrystalline Polymers.

ABSTRACT: A label-free method for quantifying stress-transmitter (or elastically effective molecule) content (p) in semicrystalline polymers, including both tie molecules and bridging entanglements, is developed and demonstrated based on swelling with deuterated vapor and characterization with small angle neutron scattering. The p results are compared with the predictions of recent semi empirical, statistical values for tie molecule content and structural characterization parameters, including strain hardening modulus and an infrared spectroscopy derived parameter ( β ) that describes the degree of difficulty for the amorphous content to align and reshape over a distance with applied load. A strong correspondence is observed, suggesting that the initial network of elastically active molecules, dicta

SUBMITTER: McDermott AG 

PROVIDER: S-EPMC11459544 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature