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Title: Method for making thin polypropylene film

Abstract

An economical method is provided for making uniform thickness polypropylene film as thin as 100 Angstroms. A solution of polypropylene dissolved in xylene is formed by mixing granular polypropylene and xylene together in a flask at an elevated temperature. A substrate, such as a glass plate or microscope slide is immersed in the solution. When the glass plate is withdrawn from the solution at a uniform rate, a thin polypropylene film forms on a flat surface area of the glass plate as the result of xylene evaporation. The actual thickness of the polypropylene film is functional of the polypropylene in xylene solution concentration, and the particular withdrawal rate of the glass plate from the solution. After formation, the thin polypropylene film is floated from the glass plate onto the surface of water, from which it is picked up with a wire hoop.

Inventors:
;
Issue Date:
Research Org.:
Lawrence Livermore National Lab., CA (USA)
OSTI Identifier:
6952454
Application Number:
ON: DE87007278
Assignee:
Dept. of Energy
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; POLYPROPYLENE; PRODUCTION; EVAPORATION; SOLUTIONS; SUBSTRATES; THICKNESS; THIN FILMS; XYLENES; ALKYLATED AROMATICS; AROMATICS; DIMENSIONS; DISPERSIONS; FILMS; HYDROCARBONS; MIXTURES; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PHASE TRANSFORMATIONS; POLYMERS; POLYOLEFINS; 360601* - Other Materials- Preparation & Manufacture

Citation Formats

Behymer, R D, and Scholten, J A. Method for making thin polypropylene film. United States: N. p., 1985. Web.
Behymer, R D, & Scholten, J A. Method for making thin polypropylene film. United States.
Behymer, R D, and Scholten, J A. Thu . "Method for making thin polypropylene film". United States.
@article{osti_6952454,
title = {Method for making thin polypropylene film},
author = {Behymer, R D and Scholten, J A},
abstractNote = {An economical method is provided for making uniform thickness polypropylene film as thin as 100 Angstroms. A solution of polypropylene dissolved in xylene is formed by mixing granular polypropylene and xylene together in a flask at an elevated temperature. A substrate, such as a glass plate or microscope slide is immersed in the solution. When the glass plate is withdrawn from the solution at a uniform rate, a thin polypropylene film forms on a flat surface area of the glass plate as the result of xylene evaporation. The actual thickness of the polypropylene film is functional of the polypropylene in xylene solution concentration, and the particular withdrawal rate of the glass plate from the solution. After formation, the thin polypropylene film is floated from the glass plate onto the surface of water, from which it is picked up with a wire hoop.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {11}
}