The heat capacity of solid poly(p-xylylene) and polystyrene
✍ Scribed by Donald E. Kirkpatrick; Lawrence Judovits; Bernhard Wunderlich
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 652 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0887-6266
No coin nor oath required. For personal study only.
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## Abstract Poly‐__p__‐xylylene prepared by pyrolysis of di‐__p__‐xylylene has been degraded under vacuum and in the presence of oxygen as a function of temperature and oxygen pressure. The vacuum pyrolysis is mainly due to “abnormal” structures. Volatiles are initially produced quite slowly, but t
## Abstract The problem of crystallinity and crosslinking in poly(__p__‐xylylene) was re‐investigated with the use of polymer that was prepared by polymerization of __p__‐xylylene in solution. It was found that amorphous polymer is converted irreversibly to α‐crystalline polymer at 50–140°C. The α‐
## Abstract Freshly prepared α‐poly(__p__‐xylylene) softens at 220–260°C. and then rehardens as it forms β‐poly(__p__‐xylylene). Consequently, homogeneous objects can be fabricated at this temperature range by simultaneous application of heat and pressure. This “moldable” poly(__p__‐xylylene), howe