Effect of composition on molecular alignment in polyethylene terephthalate copolymers
β Scribed by C.S Wang; G.S.Y Yeh
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 387 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0032-3861
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The gas permeability and free volume of a series of polyester copolymers were studied. The free volume was studied using the positron annihilation lifetime spectroscopy (PALS) technique to indicate the relative size and concentration of free volume cavities in the copolymers. The homopolymers were p
The effect of β₯-irradiation on slow crack growth (SCG) in a medium density polyethylene (MDPE) was measured and compared with behavior of high density polyethylene (HDPE) and a recrystallized HDPE (RCHDPE). The three materials exhibited the same dependence on dose up to 3 Mrd. The HDPE became brittl