Chain Conformation of Poly(alkylene oxide)s Studied by Small-Angle Neutron Scattering

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• 作者：Christine Gerstl ; Gerald J. Schneider ; Wim Pyckhout-Hintzen ; Ju虉rgen Allgaier ; Sabine Willbold ; Diana Hofmann ; Ulrich Disko ; Henrich Frielinghaus ; Dieter Richter
• 刊名：Macromolecules
• 出版年：2011
• 出版时间：August 9, 2011
• 年：2011
• 卷：44
• 期：15
• 页码：6077-6084
• 全文大小：860K
• 年卷期：v.44,no.15(August 9, 2011)
• ISSN：1520-5835

文摘

Using small-angle neutron scattering, the unperturbed chain dimensions of a series of poly(alkylene oxide)s (PAO鈥檚) were studied as a function of side-chain length. The PAO鈥檚 were obtained using anionic ring-opening polymerization methods. The deuterated monomers were synthesized from commercially available precomponents. A systematic decrease of the chain dimensions with increasing length of the side chains was found. We also compare the PAO鈥檚 with the chemically very similar poly(olefin)s with respect to the characteristic ratio C_{鈭?/sub>, the chain dimensions, and the packing length as a function of the molecular weight per backbone bond. In doing so, we found significant differences between the static properties of the two systems.}