Fluidity improvement of semiaromatic polyamides: Modification with oligomers

Abstract

Poly(decamethylene terephthalamide) PA10T with different relative viscosities (RV) were successfully produced by the reaction of 1,10-decanediamine and terephthalic acid through molecular weight regulator benzoic acid (BA). RV was shown to be decreased linearly with increasing BA concentrations and detailed structures of PA10Ts were characterized by 13 C-NMR. Fluidity of PA10T with varying molecular weight was tested and low RV PA10Ts were used as modifiers to improve fluidity behaviors of high RV PA10Ts, meanwhile mechanical properties were maintained.

Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility

“…As a kind of semiaromatic polyamide, poly (decamethylene terephthalamide) (PA10T) synthesized by polycondensation of 1,10-diaminodecane and terephthalic acid in organic solvent or deionized water has the properties of excellent heat resistance, good processability, outstanding dimensional stability, low water absorption and so on [ 20 ]. More importantly, 1,10-diaminodecane, one monomer of PA10T, is a renewable biomass energy sources and can be extracted from castor beans, which meets the requirements of green chemistry and sustainable development.…”

High‐performances biobased semi‐aromatic polyamide10Tcopolymerized with silicone monomers

“…They have received widespread attention and been developed worldwide in recent years, especially for applications in the electric and automobile industries 1–6 . As a novel semiaromatic polyamide, PA10T was synthesized by polycondensation of 1,10‐decanediamine (DMD) and terephthalic acid (TPA), and found to have excellent mechanical properties, outstanding heat and solvent resistance, dimensional stability, and low water absorption 7,8 . Furthermore, because DMD is a biobased raw material extracted from castor oil, it meets the need for a sustainable development strategy and green chemistry requirements.…”

“…PA10T has excellent mechanical properties and good heat resistance, because there are many benzene rings in its molecular chain, which improves the chain's rigidity. However, it is precisely because of these characteristics that the flexibility is poor and the processing is difficult 8,9 …”

“…[1][2][3][4][5][6] As a novel semiaromatic polyamide, PA10T was synthesized by polycondensation of 1,10-decanediamine (DMD) and terephthalic acid (TPA), and found to have excellent mechanical properties, outstanding heat and solvent resistance, dimensional stability, and low water absorption. 7,8 Furthermore, because DMD is a biobased raw material extracted from castor oil, it meets the need for a sustainable development strategy and green chemistry requirements. Since, petroleum resources are becoming scarcer, it is vital to develop biobased high-performance materials.…”

Synthesis and characterization of semiaromatic polyamides comprising benzofurobenzofuran repeating units

“…Semiaromatic polyamides are attractive engineering polymers as they combine the strength and stiffness brought by the rigid aromatic repeating units with a higher ductility due to the incorporation of flexible aliphatic repeating units. [1][2][3][4] For the same reason, they are also significantly better processable than aromatic polyamides such as Kevlar or Nomex that cannot be processed by melt extrusion or injection molding. 5,6 The use of kinked aromatic repeating units decreases the crystallinity of the polyamide, which, in turn, results in further facilitated and enhanced processability.…”