High‐performances biobased semi‐aromatic polyamide10Tcopolymerized with silicone monomers

Abstract

A novel silicone monomer modified poly(decamethylene terephthalamide) PA10T is synthesized from 1,10‐decanediamine (DMD), terephthalic acid, and 1,3‐bis(3‐aminopropyl)tetramethyldisiloxane (DS2). The chemical structure of the product is characterized using Fourier transform infrared spectrometry and nuclear magnetic resonance. The crystallization behavior, thermal properties, and mechanical properties of PA10T are also analyzed. Copolymerization of PA10T with DS2 results in reduced crystallinity and thermal properties, but to a lesser extent than when PA10T is modified with aliphatic polyamide. With increased DS2 content, the tensile strength of PA10T decreases gradually, while the elongation at break and impact strength increase significantly, indicating that the toughness of PA10T has been improved.

Non-isothermal crystallization kinetics of graphene/PA10T composites

“…Poly (decamethylene terephthalamide) (PA10T) is a semi-aromatic polyamide, synthesized by the polycondensation of terephthalic acid and diaminodecane and is used in the aerospace, automotive and 5G communication industries [ 14 ]. As a semi-aromatic polyamide, PA10T has excellent mechanical properties, heat resistance, dimensional stability, chemical corrosion resistance, hydrolysis resistance and good processability, and its water absorption is very low compared with other semi-aromatic polyamides [ 15 ]. Because the monomer diaminodecane is produced from the renewable resource castor oil, PA10T is a sustainable polymer and is the only bio-based semi-aromatic polyamide commercially synthesized at present.…”

Direct Synthesis of Thermally Stable Semiaromatic Polyamides by Bulk Polymerization Using Aromatic Diamines and Aliphatic Dicarboxylic Acids

“…To synthesize a semiaromatic polyamide in an environmentally friendly manner, there are two direct bulk polymerization strategies: (a) direct polymerization between an aliphatic diamine and aromatic dicarboxylic acid and (b) direct polymerization between an aromatic diamine and aliphatic dicarboxylic acid. For example, method (a), where intermediate ammonium salts can be isolated and purified, has been established based on direct bulk polymerization to afford poly­(hexamethylene terephthalamide) (6T), poly­(decamethylene terephthalamide) (10T), etc. − Meanwhile, method (b) has rarely been reported, probably due to the use of low-nucleophilic aromatic diamines that cannot form salts with carboxylic acid compounds, and strict stoichiometry control in a two-monomer ratio is required to obtain high-molecular-weight polymers. In addition, the polymerization temperatures are typically much higher than those when using aliphatic diamines, which provides risks of monomer sublimation, side reactions, and/or polymer decomposition during polymerization.…”

Simultaneous enhancement of mechanical performance and thermal conductivity for polyamide 10T by nanodiamond compositing

“…It has been widely used in electronic devices, automotive, military applications and many other industrial fields due to its great performance attributes, such as high-melting temperature, good heat resistance and outstanding strength. [1][2][3] However, pure polyamides have low-thermal conductivity, 0.2-0.4 W/(mÁK), 4,5 which is a limitation of polyamide application in the modern electronics industry. Over the past few decades, modern electronics have undergone significant miniaturization and high-power densification, and the trend is still continuing.…”

“…Poly(decamethylene terephthalamide) (PA10T) is a novel, partially biobased semiaromatic polyamide synthesized by polycondensation of 1,10‐diaminodecane and terephthalic acid. It has been widely used in electronic devices, automotive, military applications and many other industrial fields due to its great performance attributes, such as high‐melting temperature, good heat resistance and outstanding strength 1–3 . However, pure polyamides have low‐thermal conductivity, 0.2–0.4 W/(m·K), 4,5 which is a limitation of polyamide application in the modern electronics industry.…”