Novel Functional Polymers. Poly(dimethylsiloxane)-Polyamide Multiblock Copolymers X. 1H NMR Analysis on Fine Structure of Aramid-Silicone Resin

Kang, Eui‐Chul; Akashi, Mitsuru

doi:10.1295/polymj.34.395

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…For the copolyamide containing the isophthalic unit as the acidic component, Curnuck et al used N , N -dimethylacetamide (DMAc) for the NMR solvent. Kang et al used N , N -dimethylformamide (DMF)/CCl 4 solvent system for the analysis of the NH proton peaks of the 1 H NMR spectrum of similar copolyamides. However, Technora having the terephthalic unit as the acidic component is insoluble in such solvents.…”

Section: Resultsmentioning

confidence: 99%

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR

2003

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The dyad sequence analysis of Technora (copolyamide prepared from terephthaloyl chloride, p-phenylenediamine, and 3,4‘-diaminodiphenyl ether) was reported using 13C NMR in trifluoromethanesulfonic acid at 100 °C. For the detailed peak assignment, some model copolymers were synthesized and the 13C NMR spectra were observed. Well-resolved carbonyl carbon peaks of the terephthalic units of Technora were observed, which made it possible to analyze the p-phenylenediamine units and the 3,4‘-diaminodiphenyl ether units at dyad level. The information on the head-to-head, tail-to-tail, and head-to-tail sequences of the 3,4‘-diaminodiphenyl ether units was also obtained. It was concluded that the sequence of Technora was completely random.

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Section: Resultsmentioning

confidence: 99%

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR

2003

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Novel functional polymers: Poly(dimethyl siloxane)–polyamide multiblock copolymers. XI. The effects of sequence regularity on the thermal and mechanical properties

Kang

Kaneko

Shiino

et al. 2003

J. Polym. Sci. A Polym. Chem.

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Poly(aramid silicone) (PAS) multiblock copolymers were synthesized by the low‐temperature solution polycondensation of isophthaloyl dichloride (IPC) and two diamines, diamino poly(dimethyl siloxane) (PDMS; number‐average molecular weight = 1680) and 3,4′‐diaminodiphenylether (3,4′‐DAPE), in tetrahydrofuran/dimethylacetamide (2/1 v/v). Two synthetic methods for the control of the PAS sequence were used: a one‐step synthesis that presumably gave PAS with a random sequence and the polymerization of 3,4′‐DAPE with a presynthesized dimer, IPC–PDMS–IPC (two‐step synthesis), that presumably gave PAS with an alternating sequence of 3,4′‐DAPE and PDMS segments. In a 1H NMR study of the amide protons of the 3,4′‐DAPE component in PAS, the relative length of the 3,4′‐DAPE segment of randomly sequenced PAS to that of ideally sequenced PAS could be estimated. The glass‐transition temperatures of the 3,4′‐DAPE and PDMS segments of random PAS were 152–234 and −104 to −117 °C, respectively, whereas the alternating PAS sequences showed no glass transition for the 3,4′‐DAPE segments. A tensile test indicated that randomly sequenced PAS behaved like a rubber‐toughened material at lower PDMS contents and like a thermoplastic elastomer at higher PDMS contents, whereas the alternately sequenced PAS behaved like a very soft rubber, showing a high value of elongation at the breaking point. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 41: 841–852, 2003

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Novel biocompatible multiblock Polydimethylsiloxane-PA1212 copolymers

Wang

et al. 2020

Reactive and Functional Polymers

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Novel Functional Polymers. Poly(dimethylsiloxane)-Polyamide Multiblock Copolymers X. 1H NMR Analysis on Fine Structure of Aramid-Silicone Resin

Cited by 5 publications

References 15 publications

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR

Novel functional polymers: Poly(dimethyl siloxane)–polyamide multiblock copolymers. XI. The effects of sequence regularity on the thermal and mechanical properties

Novel biocompatible multiblock Polydimethylsiloxane-PA1212 copolymers

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Novel Functional Polymers. Poly(dimethylsiloxane)-Polyamide Multiblock Copolymers X. 1H NMR Analysis on Fine Structure of Aramid-Silicone Resin

Cited by 5 publications

References 15 publications

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using 13C NMR

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using 13C NMR

Novel functional polymers: Poly(dimethyl siloxane)–polyamide multiblock copolymers. XI. The effects of sequence regularity on the thermal and mechanical properties

Novel biocompatible multiblock Polydimethylsiloxane-PA1212 copolymers

Contact Info

Product

Resources

About

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR

Sequence Analysis of Technora (Copolyamide of Terephthaloyl Chloride, p-Phenylenediamine, and 3,4‘-Diaminodiphenyl Ether) Using ¹³C NMR