Amide-containing segmented copolymers

Preparation and characterization of a new class of poly(ether‐block‐amide)s via solvent free reactive processing

“…Polyamide‐based block copolymers usually consist of polyamide as hard segments and polyether or polyester as soft segment . According to the practical application, polyamide‐6 (PA6), polyamide‐12, polyamide‐66, polyamide‐610, and other polyamides can be selected as the hard segments in the polyamide‐based block copolymer . Compared with other hard segments in the block copolymer, polyamide hard segments possess stronger hydrogen bonding and intermolecular forces, which will impart the block copolymer high melting temperature (T m ), organic solvent resistance, thermal resistance, abrasive resistance, etc …”

“…The oligomeric prepolymers with low glass transition temperature (T g ) were frequently used as the soft segments in the polyamide‐based block copolymer in the previous study . P.A.M. Lips prepared a series of poly(ester amide)s with different PA6 hard segments and poly(butylenes adipate) soft segments.…”

“…[5][6][7][8][9][10] According to the practical application, polyamide-6 (PA6), polyamide-12, polyamide-66, polyamide-610, and other polyamides can be selected as the hard segments in the polyamidebased block copolymer. 4,11,12 Compared with other hard segments in the block copolymer, polyamide hard segments possess stronger hydrogen bonding and intermolecular forces, which will impart the block copolymer high melting temperature (T m ), organic solvent resistance, thermal resistance, abrasive resistance, etc. [13][14][15] The oligomeric prepolymers with low glass transition temperature (T g ) were frequently used as the soft segments in the polyamide-based block copolymer in the previous study.…”

“…[13][14][15] The oligomeric prepolymers with low glass transition temperature (T g ) were frequently used as the soft segments in the polyamide-based block copolymer in the previous study. 12,16,17 P.A.M. Lips 18 prepared a series of poly(ester amide)s with different PA6 hard segments and poly(butylenes adipate) soft segments. The obtained poly(ester amide)s exhibited obvious crystalline hard segments and with the increasing of PA6 hard segments content from 10 to 85 mol% the high melt transition increased from 83°C to 140°C.…”

Drug delivery system based on poly(ether‐block‐amide) and acrylic acid for controlled release of vancomycin

“…[1][2][3] Specifically, the thermoplastic elastomers are a family of polymers with similar elasticity to natural rubber which can be thermally processed for fabricating biomedical devices and implants, due to their high strength and flexibility, as well as excellent resistance to chemical and thermal aging. 8,9 Due to these properties, this copolymer has been used in different applications including membrane for food packaging, 9 gas separation, 10 and biomedical devices. 6,7 The combination of these two segments gives as result a copolymer with good mechanical strength, thermal stability, flexibility, biocompatibility, chemical resistance, and ease of processing.…”