Letter | Published:

A Secondary Process in the Liquid-induced Crystallization of Polyethylene Terephthalate

Naturevolume 199page902 (1963) | Download Citation



IT is known that amorphous polyethylene terephthalate may be crystallized by treatment with certain organic liquids1. With the polymer in the form of a film the process is accompanied by the appearance of opalescence, generally attributed to sub-microscopic spherulites, and is a function of time, temperature and film thickness2. In these investigations the thickness was at least equal to 2 × 10−2 cm. On extension of the work to include thinner films, it was observed that not only was there an increase of opalescence on treatment with a typical liquid such as acetone but also that after a certain time, afterwards referred to as an induction period, an almost opaque front was seen to move across the sample.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Kolb, J., and Izard, E. F., J. App. Phys., 20, 571 (1949). Moore, W. R., Richards, D. O., and Sheldon, R. P., J. Text. Inst., 51, T 438 (1960).

  2. 2

    Sheldon, R. P., Polymer, 3, 27 (1962).

Download references

Author information


  1. Polymer Research Laboratories, Department of Chemical Technology, Institute of Technology, Bradford

    • L. COTTAM
    •  & R. P. SHELDON


  1. Search for L. COTTAM in:

  2. Search for R. P. SHELDON in:

About this article

Publication history

Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.