Polyamides

Applying the Traditional Solution Melt Polymerization for the in situ Intercalation of Polyamide 6.6‐Clay Nanocomposites

“…In the case of PA nanocomposites, none of the above mentioned monomers peaks are present, while the spectra of reference PA 6.6 and nanocomposites included the absorption at 3 300 cm −1 , which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 17, 18…”

Applying the Traditional Solution Melt Polymerization for the in situ Intercalation of Polyamide 6.6‐Clay Nanocomposites

“…In the case of PA nanocomposites, none of the above mentioned monomers peaks are present, while the spectra of reference PA 6.6 and nanocomposites included the absorption at 3 300 cm −1 , which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 17, 18…”

Long‐Aliphatic‐Segment Polyamides: Salt Preparation and Subsequent Anhydrous Polymerization

“…More specifically, all spectra included the absorption at 3 300 cm −1 which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 5, 8, 9…”

Depolymerization within a Circular Plastics System

“…The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity. 241 This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6. Hydrogenolysis of nylon-66 (and nylon-6) with a ruthenium-pincer catalyst was recently and simultaneously reported by two groups.…”

“…Nylon-66 is made by polycondensation of adipic acid and hexamethylenediamine. The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity . This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6.…”

Applying the Traditional Solution Melt Polymerization for the in situ Intercalation of Polyamide 6.6‐Clay Nanocomposites

“…In the case of PA nanocomposites, none of the above mentioned monomers peaks are present, while the spectra of reference PA 6.6 and nanocomposites included the absorption at 3 300 cm −1 , which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 17, 18…”

Long‐Aliphatic‐Segment Polyamides: Salt Preparation and Subsequent Anhydrous Polymerization

“…More specifically, all spectra included the absorption at 3 300 cm −1 which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 5, 8, 9…”

Depolymerization within a Circular Plastics System

“…The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity. 241 This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6. Hydrogenolysis of nylon-66 (and nylon-6) with a ruthenium-pincer catalyst was recently and simultaneously reported by two groups.…”

“…Nylon-66 is made by polycondensation of adipic acid and hexamethylenediamine. The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity . This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6.…”

Applying the Traditional Solution Melt Polymerization for the in situ Intercalation of Polyamide 6.6‐Clay Nanocomposites

“…In the case of PA nanocomposites, none of the above mentioned monomers peaks are present, while the spectra of reference PA 6.6 and nanocomposites included the absorption at 3 300 cm −1 , which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 17, 18…”

Long‐Aliphatic‐Segment Polyamides: Salt Preparation and Subsequent Anhydrous Polymerization

“…More specifically, all spectra included the absorption at 3 300 cm −1 which is attributed to the hydrogen‐bonded NH stretching vibration (Amide I). The absorption at 1 640 cm −1 corresponds to the CO stretching vibration (Amide I), whereas the absorption at 1 540 cm −1 is assigned to the hydrogen‐bonded NH bending vibration (Amide II) 5, 8, 9…”

Depolymerization within a Circular Plastics System

“…The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity. 241 This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6. Hydrogenolysis of nylon-66 (and nylon-6) with a ruthenium-pincer catalyst was recently and simultaneously reported by two groups.…”

“…Nylon-66 is made by polycondensation of adipic acid and hexamethylenediamine. The structure and applications of nylon-66 and nylon-6 are similar, however nylon-66 has stronger interchain hydrogen bonding and increased crystallinity . This bonding makes nylon-66 more mechanically, thermally, and chemically robust than nylon-6.…”