Rate‐determining factors for enthalpy relaxation of glassy polymers. Molecular weight

1975 ◽  
Vol 46 (10) ◽  
pp. 4223-4230 ◽  
Author(s):  
A. S. Marshall ◽  
S. E. B. Petrie
Keyword(s):  
Molecular Weight ◽  
Glassy Polymers ◽  
Enthalpy Relaxation ◽  
Determining Factors

scholarly journals Crazing and yielding in glassy polymers of high molecular weight

Polymer ◽  
2020 ◽  
Vol 197 ◽  
pp. 122445 ◽  
Author(s):  
Masoud Razavi ◽  
Shiwang Cheng ◽  
Da Huang ◽  
Shufan Zhang ◽  
Shi-Qing Wang
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Glassy Polymers

Effect of Molecular Weight on Enthalpy Relaxation in Syndiotactic Poly(Methyl-Methacrylate)

2007 ◽  
Vol 247 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Stefania Della Sciucca ◽  
Maurizio Penco ◽  
Luciana Sartore
Keyword(s):  
Molecular Weight ◽  
Methyl Methacrylate ◽  
Enthalpy Relaxation ◽  
Poly Methyl Methacrylate

Fracture Energy and Critical Strength of High Molecular Weight Glassy Polymers

1990 ◽  
Vol 214 ◽  
Author(s):  
Antonios G. Mikos ◽  
Nikolaos A. Peppas
Keyword(s):  
Molecular Weight ◽  
Fracture Energy ◽  
Molecular Model ◽  
Mesh Size ◽  
Glassy Polymers ◽  
Segment Length ◽  
Critical Strength ◽  
Theoretical Predictions ◽  
Entanglement Network ◽  
Chain Entanglements

ABSTRACTThe fracture energy and the critical strength of glassy polymers with molecular weight larger than the critical value for the onset of chain entanglements are proportional to the number of chain segments entangled about a unit plane. A new molecular model is presented to calculate the crossing density of these chain segments when the segment length is a stochastic variable. The crossing density depends on the mesh size of the entanglement network and the number of entanglement network strands per unit volume. Theoretical predictions of the variation of the fracture energy and strength with the molecular weight are compared with experimental results for various glassy polymers.

Influence of molecular weight on enthalpy relaxation and fragility of amorphous carbohydrates

2012 ◽  
Vol 88 (1) ◽  
pp. 223-231 ◽  
Author(s):  
Roopesh M. Syamaladevi ◽  
Gustavo V. Barbosa-Cánovas ◽  
Shelly J. Schmidt ◽  
Shyam S. Sablani
Keyword(s):  
Molecular Weight ◽  
Enthalpy Relaxation

Enthalpy relaxation in glassy polymers

2000 ◽  
Vol 44 (3) ◽  
pp. 353-360
Author(s):  
Aleksey D. Drozdov
Keyword(s):  
Glassy Polymers ◽  
Enthalpy Relaxation
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