PMID- 22029282 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20120315 LR - 20111124 IS - 1520-5207 (Electronic) IS - 1520-5207 (Linking) VI - 115 IP - 47 DP - 2011 Dec 1 TI - Analysis of the lamellar structure of semicrystalline polymers by direct model fitting of SAXS patterns. PG - 13803-8 LID - 10.1021/jp204998p [doi] AB - Small-angle X-ray scattering data of melt-drawn high-density polyethylene (HDPE) have been analyzed by direct model fitting to projections on the drawing direction. On the basis of the assumption of an infinite paracrystalline lattice as proposed by Hosemann and a rectangular density profile, several additional assumptions have been tested. It turned out that to achieve good fits we have to introduce a finiteness of the lattice for the used samples. Transition zones between crystalline and amorphous regions also improve the model but are of less importance. The most suitable model has been tested on data from an annealing and subsequent cooling process. We show that the additional parameters gained in the modeling approach compared to peak analysis or correlation function analysis lead to a better understanding of the structures and processes in the samples. CI - (c) 2011 American Chemical Society FAU - Fischer, Stefan AU - Fischer S AD - State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Renmin Street 5625, Changchun, PR China, 130022, People's Republic of China. FAU - Jiang, Zhiyong AU - Jiang Z FAU - Men, Yongfeng AU - Men Y LA - eng PT - Journal Article DEP - 20111107 PL - United States TA - J Phys Chem B JT - The journal of physical chemistry. B JID - 101157530 EDAT- 2011/10/28 06:00 MHDA- 2011/10/28 06:01 CRDT- 2011/10/28 06:00 PHST- 2011/10/28 06:00 [entrez] PHST- 2011/10/28 06:00 [pubmed] PHST- 2011/10/28 06:01 [medline] AID - 10.1021/jp204998p [doi] PST - ppublish SO - J Phys Chem B. 2011 Dec 1;115(47):13803-8. doi: 10.1021/jp204998p. Epub 2011 Nov 7.