Simulation of solid‐state polycondensation of nylon‐66

Complex Effects of the Sweep Fluid on Solid-State Polymerization: Poly(bisphenol A carbonate) in Supercritical Carbon Dioxide

“…Similar trends of lamellar thickness and crystallinity with prepolymer molecular weight and sweep fluid were observed at a lower reaction temperature of 170 °C. The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst and for poly( l -lactic acid) (PLA), , poly(ethylene terephthalate) (PET), and nylon-6,6 …”

“…The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst 4 and for poly(L-lactic acid) (PLA), 19,20 poly(ethylene terephthalate) (PET), 21 and nylon-6,6. 22 In previous work, we discussed the effect of prepolymer molecular weight on SSP of BPA-PC with N 2 as the sweep fluid. 13 Higher-molecular-weight BPA-PC was obtained when the higher-molecular-weight prepolymer (PCP6C) was used.…”

Complex Effects of the Sweep Fluid on Solid-State Polymerization: Poly(bisphenol A carbonate) in Supercritical Carbon Dioxide

“…Similar trends of lamellar thickness and crystallinity with prepolymer molecular weight and sweep fluid were observed at a lower reaction temperature of 170 °C. The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst and for poly( l -lactic acid) (PLA), , poly(ethylene terephthalate) (PET), and nylon-6,6 …”

“…The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst 4 and for poly(L-lactic acid) (PLA), 19,20 poly(ethylene terephthalate) (PET), 21 and nylon-6,6. 22 In previous work, we discussed the effect of prepolymer molecular weight on SSP of BPA-PC with N 2 as the sweep fluid. 13 Higher-molecular-weight BPA-PC was obtained when the higher-molecular-weight prepolymer (PCP6C) was used.…”

Solid-State Polymerization of Poly(trimethylene terephthalate): Reaction Kinetics and Prepolymer Molecular Weight Effects

“…The lamellar thickness of PTT could not be estimated herein because the fold surface free energy value is not known in the available literature. The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, and for poly( l -lactic acid) (PLA), poly(ethylene terephthalate) (PET), and nylon 6,6 …”

“…The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, 19 and for poly(L-lactic acid) (PLA), 20 poly(ethylene terephthalate) (PET), 21 and nylon 6,6. 22 The lower crystallinity and the smaller lamellar thickness of the polymers synthesized from PTTP3 compared to that of the polymers synthesized from PTTP2 may be associated with the higher molecular weight of PTTP3. Longer polymer chains appear to exhibit lowered tendencies toward crystallization and toward increased lamellar size during SSP.…”

Improved processability ofPA66‐polyimidecopolymers with different polyimide contents

“…After cooling, it was crushed and placed in a vacuum oven at 210°C for 8 hr to allow the solid phase to undergo polycondensation. [ 28–31 ]…”

Complex Effects of the Sweep Fluid on Solid-State Polymerization: Poly(bisphenol A carbonate) in Supercritical Carbon Dioxide

“…Similar trends of lamellar thickness and crystallinity with prepolymer molecular weight and sweep fluid were observed at a lower reaction temperature of 170 °C. The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst and for poly( l -lactic acid) (PLA), , poly(ethylene terephthalate) (PET), and nylon-6,6 …”

“…The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst 4 and for poly(L-lactic acid) (PLA), 19,20 poly(ethylene terephthalate) (PET), 21 and nylon-6,6. 22 In previous work, we discussed the effect of prepolymer molecular weight on SSP of BPA-PC with N 2 as the sweep fluid. 13 Higher-molecular-weight BPA-PC was obtained when the higher-molecular-weight prepolymer (PCP6C) was used.…”

Solid-State Polymerization of Poly(trimethylene terephthalate): Reaction Kinetics and Prepolymer Molecular Weight Effects

“…The lamellar thickness of PTT could not be estimated herein because the fold surface free energy value is not known in the available literature. The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, and for poly( l -lactic acid) (PLA), poly(ethylene terephthalate) (PET), and nylon 6,6 …”

“…The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, 19 and for poly(L-lactic acid) (PLA), 20 poly(ethylene terephthalate) (PET), 21 and nylon 6,6. 22 The lower crystallinity and the smaller lamellar thickness of the polymers synthesized from PTTP3 compared to that of the polymers synthesized from PTTP2 may be associated with the higher molecular weight of PTTP3. Longer polymer chains appear to exhibit lowered tendencies toward crystallization and toward increased lamellar size during SSP.…”

Improved processability ofPA66‐polyimidecopolymers with different polyimide contents

“…After cooling, it was crushed and placed in a vacuum oven at 210°C for 8 hr to allow the solid phase to undergo polycondensation. [ 28–31 ]…”

Complex Effects of the Sweep Fluid on Solid-State Polymerization: Poly(bisphenol A carbonate) in Supercritical Carbon Dioxide

“…Similar trends of lamellar thickness and crystallinity with prepolymer molecular weight and sweep fluid were observed at a lower reaction temperature of 170 °C. The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst and for poly( l -lactic acid) (PLA), , poly(ethylene terephthalate) (PET), and nylon-6,6 …”

“…The increase in crystallinity with increased SSP time has also been found during the synthesis of BPA-PC using a disodium salt of BPA as a catalyst 4 and for poly(L-lactic acid) (PLA), 19,20 poly(ethylene terephthalate) (PET), 21 and nylon-6,6. 22 In previous work, we discussed the effect of prepolymer molecular weight on SSP of BPA-PC with N 2 as the sweep fluid. 13 Higher-molecular-weight BPA-PC was obtained when the higher-molecular-weight prepolymer (PCP6C) was used.…”

Solid-State Polymerization of Poly(trimethylene terephthalate): Reaction Kinetics and Prepolymer Molecular Weight Effects

“…The lamellar thickness of PTT could not be estimated herein because the fold surface free energy value is not known in the available literature. The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, and for poly( l -lactic acid) (PLA), poly(ethylene terephthalate) (PET), and nylon 6,6 …”

“…The increase in crystallinity with increasing SSP time or with an increase in the SSP temperature has also been observed during the synthesis of BPA-PC, 19 and for poly(L-lactic acid) (PLA), 20 poly(ethylene terephthalate) (PET), 21 and nylon 6,6. 22 The lower crystallinity and the smaller lamellar thickness of the polymers synthesized from PTTP3 compared to that of the polymers synthesized from PTTP2 may be associated with the higher molecular weight of PTTP3. Longer polymer chains appear to exhibit lowered tendencies toward crystallization and toward increased lamellar size during SSP.…”

Improved processability ofPA66‐polyimidecopolymers with different polyimide contents

“…After cooling, it was crushed and placed in a vacuum oven at 210°C for 8 hr to allow the solid phase to undergo polycondensation. [ 28–31 ]…”