Fractionation of polyethylene

Wiley - Tập 36 Số 130 - Trang 3-19 - 1959
Patrick M. Henry1
1Research Center, Hercules Powder Company, Wilmington, Delaware

Tóm tắt

AbstractA procedure and apparatus are described for the large scale (50‐gram) fractionation of high‐density polyethylene by Desreaux's fractional extraction technique. Two samples of Ziegler polyethylene were fractionated by this technique and the intrinsic viscosity in decalin at 135°C. and molecular weight by light scattering were measured on the fractions. The relationship [η] = 4.6 × 10−4 M̄w0.73 was found to hold for molecular weights between 25,000 and 640,000. The samples differed in polydispersity, one having a broad distribution and the other a rather narrow distribution. Evidence for the sharpness of the fractions obtained by the new technique was provided by refractionating of one fraction and the resolation of two fractions which were combined and refractionated.

Từ khóa


Tài liệu tham khảo

10.1002/bscb.19500590707

P. S.Francis R. C.Cooke Jr. andJ. H.Elliott J. Polymer Sci. to be published.

10.1002/pol.1957.1202410702

10.1002/pol.1956.1202210024

10.1021/ja01120a007

10.1063/1.1747157

10.1002/pol.1952.120080505

10.1002/pol.1957.1202310433

10.1002/pol.1959.1203613008

10.1063/1.1746195

10.1002/pol.1954.120147304

10.1063/1.1746738

L. H.Tung private communication.

10.1021/ja01576a004

10.1021/ja01149a002

10.1002/macp.1956.020200109

Thông tin
Thông tin xuất bản

Wiley

Tập 36 Số 130

3-19

Thông tin tác giả