Crystallization and crystalline dynamics of poly(3-hydroxybutyrate) / poly(4-vinylphenol) polymer blends studied by low-frequency vibrational spectroscopy

A linear diamides derivative (TMC300) as a nucleating agent (NA) was incorporated into biodegradable poly(ethylene succinate) (PES) to investigate effect of TMC300 on nucleation, crystallizability, crystallization kinetics, aggregated structure of PES. TMC300 enhanced signi cantly crystallizability and crystallization temperature of PES in cooling process at a rate of 10 ℃/min from molten state, indicating that TMC300 exhibits an excellent nucleation effect on PES. IR measurement suggested that TMC300 interacts with amorphous carbonyl and ester group, and crystalline CH 2 group of PES via hydrogen bond.Change rate of carbonyl group is comparable to that of C-C backbone of PES, regardless of the presence or absence of TMC300. Small difference of diffraction peak in WAXD measurement between neat PES and PES/TMC300 is probably attributed to spherulitic orientation on lm surface of neat PES, and different spatial arrangements in the same crystal lattice. TMC300 enhanced carbon residue yield of PES/TMC300 composite, probably related to slight ame retardance effect.

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“…in Fig. 6a) phase [49][50][51], respectively. No IR peak could be found for neat TMC300 in the region of 1800 − 1700 cm − 1 .…”

Section: Isothermal Crystallization and Crystallization Kineticsmentioning

confidence: 91%

Linear Diamides Derivative-Nucleated Biodegradable Poly(ethylene succinate) Polyester: Crystallization Kinetics and Aggregated Structure Manipulated by Hydrogen Bond Interaction

Zhou

Sun

et al. 2021

J Polym Environ

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“…32 Weaker bands at 238, 202, and 128 cm -1 have also been observed in Figure 2 this blending ratio, PHB/PVPh shows the lowest crystalline feature as has been mentioned in the previous study. 18 The position of the band at 128 cm -1 shifts to the higher wavenumber by increasing PHB content. It implies that this band is sensitive to structural transformation due to changes in the blending ratio.…”

Section: Generating 2d-cosmentioning

confidence: 98%

“…16,17 (10/90), and (20/80) no band can be observed due to their amorphous phase. 18 Band assignments described in Table 1 have been performed based on the quantum chemical calculation with Cartesian coordinate tensor transfer (CCT) method reported by Yamamoto et al 32 The band at 264 cm -1 was assigned to the atomic motion of OCH (along a axis) + CH 3 . The band at 179 cm -1 was ascribed to the motion of CH 2 + CH 3 , the one at 96 cm -1 was due to the motion of COO + CH 2 + CH 3 , and the one at 83 cm -1 was assigned to the mode of out of-plane C=O + CH 3 coupled with the mode of COO + CH 2 + CH 3 .…”

Section: Generating 2d-cosmentioning

confidence: 99%

A Study on Blend Ratio-dependent Far-IR and Low-frequency Raman Spectra and WAXD Patterns of Poly(3-hydroxybutyrate)/ poly(4-vinylphenol) Using Homospectral and Heterospectral Two-dimensional Correlation Spectroscopy

et al. 2019

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An intensive analysis of far-infrared (far-IR), low-frequency Raman, and wide angle X-ray diffraction (WAXD) data have been performed by two-dimensional correlation spectroscopy (2D-COS) as a function of the blend ratio of poly(3-hydroxybutyrate)/poly(4-vinylphenol) (PHB/PVPh). Homospectral 2D-COS revealed that a weak band at 128 cm -1 in the far-IR spectra was more clearly appeared in the 2D correlation spectra. Heterospectral 2D-COS (far-IR/low-frequency Raman and far-IR/WAXD) provided very important results that were hardly detected in the conventional 2D-COS. A far-IR peak at 130 cm -1 in the heterospectral 2D-COS had negative correlations with the peaks in the low-frequency Raman spectra at 81, 100, and 110 cm -1 and WAXD profile 8.78˚ and 11.01˚. These results indicated that those peaks have different origin; the 130 cm -1 peak comes from the intermolecular C=O … H-O hydrogen bond between PHB and PVPh while those for low-frequency Raman and WAXD peaks are the features of PHB crystalline structure.

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“…The study of (P(HB-co-HV)) successfully reported the crystalline structure change from PHB-type structure to PHV-type, as shown in the infrared and X-ray studies [13,15]. PHB/PVPh study progressively reported the formation of new peak due to intermolecular hydrogen bonding between PHB and PVPh molecules [14]. In this study we attempted to elucidate the change in the higher-order structure and hydrogen bonding formed by polymer blends of PHB and glycol chitosan.…”

Section: Introductionmentioning

confidence: 95%

“…Since low-frequency vibrational spectra are derived from intra and intermolecular interactions, THz spectroscopy can be powerful tool to reveal the formation of higher-order structures of not only homopolymer but also modified polymer. The investigation of homopolymer PHB, PHBbased copolymer and PHB-based polymer blend systems; poly(3-hydroxybutyrate-co-3hydroxyvalerate) (P(HB-co-HV)) and PHB/poly(4-vinylphenol) (PVPh) by using low-frequency vibrational spectroscopy have been successfully performed in the previous study [10][11][12][13][14]. By investigate temperature, polarized dependence together with quantum chemical calculation, the bands appeared in the region 120-70 cm -1 of THz spectra was assigned to vibrational motion of (C=O … H-C) hydrogen bonding of PHB [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen bonding investigation of poly(3-hydroxybutyrate) / glycol chitosan blends studied by infrared and terahertz spectroscopies

Marlina

Sato

2019

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Poly(3-hydroxybutyrate) (PHB)/glycol chitosan (GC) polymer blend was developed as one of the new biopolymer materials. Effects of different PHB / GC concentrations were analysed as a function of the blend compositions by using Fourier transform infrared (FTIR) and terahertz (THz) spectroscopies to investigate the changes in the higher-order structure and bonding of hydrogen. The higher-order structure and hydrogen bonding monitored in this study include the crystalline structure and (C=O…H-C) hydrogen bonding of PHB. The FTIR and THz spectra showed that PHB's higher-order structure transforms into the less-order structure by adding GC without altering the crystalline structure and PHB's intramolecular (C = O ... H-C) hydrogen bonding with increasing GC concentration. Because of the addition of GC, the intensity ratio of THz bands figure out the crystalline dynamics of PHB, the helical structure deformation occurs first followed by the weakening of intramolecular (C = O ... H-C) hydrogen bonding within PHB-PHB molecules. Keywords: Chitosan, higher-order structure, hydrogen bonding, low-frequency vibrational spectroscopy

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Crystallization and crystalline dynamics of poly(3-hydroxybutyrate) / poly(4-vinylphenol) polymer blends studied by low-frequency vibrational spectroscopy

Cited by 17 publications

References 43 publications

Linear Diamides Derivative-Nucleated Biodegradable Poly(ethylene succinate) Polyester: Crystallization Kinetics and Aggregated Structure Manipulated by Hydrogen Bond Interaction

Linear Diamides Derivative-Nucleated Biodegradable Poly(ethylene succinate) Polyester: Crystallization Kinetics and Aggregated Structure Manipulated by Hydrogen Bond Interaction

A Study on Blend Ratio-dependent Far-IR and Low-frequency Raman Spectra and WAXD Patterns of Poly(3-hydroxybutyrate)/ poly(4-vinylphenol) Using Homospectral and Heterospectral Two-dimensional Correlation Spectroscopy

Hydrogen bonding investigation of poly(3-hydroxybutyrate) / glycol chitosan blends studied by infrared and terahertz spectroscopies

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