Effect of Molecular Weight Distribution on the Crystallinity and Monolayer Morphology of N-alkylated Poly(<i>p</i>-benzamides)
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- Yanagimachi Yuta
- Department of Functional Materials Science, Faculty Engineering, Saitama University
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- Taguchi Makoto
- Department of Functional Materials Science, Faculty Engineering, Saitama University
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- Chiba Satoshi
- Graduate School of Science and Engineering, Saitama University Graduate School of Science and Engineering, Yamagata University
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- Shibasaki Yuji
- Department of Chemistry and Bioengineering, Faculty Engineering, Iwate University
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- Fujimori Atsuhiro
- Graduate School of Science and Engineering, Saitama University
Abstract
We synthesized new aromatic polyamides (poly-(N-alkylated benzamides), abbrev. PABAn) having both a rigid main chain and a flexible side chain with different lengths. We investigated the solid-state structures, that is, the molecular orientation and surface morphology, of organized molecular films of PABAn by performing surface pressure-area (π-A) isotherm, and atomic force microscopy (AFM) measurements. The solid-state structure of poly-(N-methyl benzamide) (PABA1) belonged to the monoclinic system, whereas PABA3, PABA4, and PABA5 showed an orthorhombic packing pattern. PABA7 and PABA8 formed amorphous polymers. In the case of PABA17, a two-dimensional hexagonal lattice was formed as a subcell consisting of side chains. These polymer monolayers were highly condensed on a water surface at 15 °C. At the air/water interface, changes in "particulation” behavior are confirmed in the system of PABA3 controlled molecular weight distribution. Monomolecular layer of PABA16 with narrow molecular weight distribution forms the large circular domain whereas existence of many angular domains for monolayer of PABA16 with broad one.
Journal
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- Transactions of the Materials Research Society of Japan
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Transactions of the Materials Research Society of Japan 37 (2), 295-298, 2012
The Materials Research Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680489158528
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- NII Article ID
- 130003399105
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- COI
- 1:CAS:528:DC%2BC38Xht1aksLrN
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- ISSN
- 21881650
- 13823469
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed