In:
e-Polymers, Walter de Gruyter GmbH, Vol. 1, No. 1 ( 2001-12-1)
Abstract:
Two step synthesis of educts for the synthesis of poly( p -xylylene)s was accomplished by Grignard-type coupling reaction of 4-bromotoluene and different aldehydes or p -tolylaldehyde and different aryl bromides followed by conversion of alcohols into corresponding chlorides. Derivatives of poly( p -xylylene) (PPX) were obtained by vapor phase pyrolysis/chemical vapor deposition (CVD) or Gilch-type polymerization of these chlorides. Functional groups along the PPX main chain were introduced by substituted phenyl rings in a-position. The resulting PPXs are soluble under ambient conditions and are amorphous in the solid state. The glass transition temperatures varied only slightly with substituents on the phenyl ring in a-position. Significant enhancement by substituents was found for the thermal stability under nitrogen and a considerable decrease of the surface energies by fluorinated substituents.
Type of Medium:
Online Resource
ISSN:
1618-7229
,
2197-4586
DOI:
10.1515/epoly.2001.1.1.25
Language:
Unknown
Publisher:
Walter de Gruyter GmbH
Publication Date:
2001
detail.hit.zdb_id:
2060396-4
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