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On the reversibility of the crystalline phase transitions of poly(p-xylylene)

✍ Scribed by D. E. Kirkpatrich; B. Wunderlich


Publisher
John Wiley and Sons
Year
1986
Tongue
English
Weight
331 KB
Volume
24
Category
Article
ISSN
0887-6266

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📜 SIMILAR VOLUMES


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The electronic structure of poiy(&xylylene) is of particular interest in the study of conducthrg Polymeric materials because it lies at the border between materials in which molecular cation states aredelocalized over several polymeric repeat units (e-g. polyethyiene [l] , polyacetylene [2,3] and po

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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

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## 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