Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Preparation and Properties of a Novel Nylon 6 Co-polymerized by ε-Caprolactam and α-Amino-ε-Caprolactam

Version 1 : Received: 17 April 2024 / Approved: 17 April 2024 / Online: 18 April 2024 (12:23:24 CEST)

A peer-reviewed article of this Preprint also exists.

Mao, X.; Liu, W.; Li, Z.; Mei, S.; Zong, B. Preparation of A Novel Branched Polyamide 6 (PA6) via Co-Polymerization of ε-Caprolactam and α-Amino-ε-Caprolactam. Polymers 2024, 16, 1719. Mao, X.; Liu, W.; Li, Z.; Mei, S.; Zong, B. Preparation of A Novel Branched Polyamide 6 (PA6) via Co-Polymerization of ε-Caprolactam and α-Amino-ε-Caprolactam. Polymers 2024, 16, 1719.

Abstract

In this study, we successfully synthesized a novel branched polyamide 6 with ε-caprolactam(CPL) and α-Amino-ε-caprolactam(ACL) through hydrolytic ring-open co-polymerization. The NMR characterization and rheological test result proved the existence of branched chain structure additionally. The branched chain structure caused a remarkable enhancement in the rheological properties. The met index(MFR),zero shear rate viscosity and storage modulus at low frequency region had a remarkable increase.The shear thinning phenomenon became more obvious. The thermal properties test determined by differential scanning calorimetry(DSC) showed that the melting point and crystallinity of co-polymers decreased with the increase of ACL addition.However, the crystal structure of the samples remained unchanged. The appropriate addition amount of ACL can improve the tensile mechanical properties of the co-polymers. When the amount of ACL was 1%, the tensile strength and fracture elongation rate of the co-polymers had the most significant increase.

Keywords

Hydrolysis open-ring polymerization; Modified branched PA6; Thermal properties; Rheological properties; Mechanical properties

Subject

Chemistry and Materials Science, Polymers and Plastics

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