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Elastic modulus in the crystalline region of poly(p-phenylene terephthalamide)

✍ Scribed by R.J. Gaymans; J. Tijssen; S. Harkema; A. Bantjes

Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
172 KB
Volume
17
Category
Article
ISSN
0032-3861

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πŸ“œ SIMILAR VOLUMES

Elastic modulus of the crystalline regio
Elastic modulus of the crystalline regions of polyimide derived from poly(amic acid)–biphtalic dianhydride and p-phenylene diamine
✍ Takashi Nishino; Norihiko Miki; Yoshiaki Mitsuoka; Katsuhiko Nakamae; Takayuki S πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 203 KB πŸ‘ 2 views

The elastic modulus E l of the crystalline regions in the direction parallel to the chain axis was measured by X-ray diffraction for polyimide derived from polyamic acid (biphthalic dianhydride and p-phenylene diamine). These specimens were cured by two different routes: curing at 200 Β°C, and at 400

Elastic modulus of the crystalline regio
Elastic modulus of the crystalline regions of chitin and chitosan
✍ Takashi Nishino; Ryousuke Matsui; Katsuhiko Nakamae πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 153 KB πŸ‘ 2 views

The elastic moduli E l of the crystalline regions of ␣-chitin and chitosan in the direction parallel to the chain axis were measured by X-ray diffraction. The E l values were 41 GPa for ␣-chitin, and 65 GPa for chitosan, respectively, at 20°C. The contracted skeletons of ␣-chitin and chitosan are th

Dynamic birefringence and conformation o
Dynamic birefringence and conformation of poly-p-phenylene terephthalamide molecules in solution
✍ V.N. Tsvetkov; I.N. Shtennikova; T.V. Peker; G.I. Kudriavtsev; A.V. Volokhina; V πŸ“‚ Article πŸ“… 1977 πŸ› Elsevier Science 🌐 English βš– 288 KB

Flow birefringence (FB) for samples of poly-p-phenylene terephthalamide (PPPhTPhA) dissolved in sulphuric acid has been investigated; intrinsic viscosities [~/] of the solutions have been measured. Characteristic values of FB [n] and orientation angles [X/9] of the solutions were determined. Coeffic