Viscoelastic properties of an organic hybrid of chlorinated polyethylene and a small molecule

Wu, Chifei; Yamagishi, Toshio; Nakamoto, Yoshiaki; Ishida, Susumu; Nitta, Koh‐hei; Kubota, Saburo

doi:10.1002/(sici)1099-0488(20000515)38:10<1341::aid-polb100>3.0.co;2-r

Cited by 44 publications

(36 citation statements)

References 16 publications

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“…14,15 Supramolecular mesomorphic complexes consisting of different and independent molecules have been designed and prepared by intermolecular hydrogen bonds. 16 According to our studies, [17][18][19] the molecular aggregation of the small molecules appeared in a organic hybrid consisting of chlorinated polyethylene (CPE) and N,N-dicyclohexyl-benzthiazyl-2-sulfenaamid when the amount of the small molecules are higher than a critical valve, and the addition of phenol antioxidants to acrylic rubbers produces intermolecular association through hydrogen bonds. Therefore, in the case of the organic hybrid consisting of CPE and phenol system antioxidant, if the aggregation of phenol system small molecules, and the intermolecular hydrogen bonds between a ␣-hydrogen of CPE and a hydroxyl group of phenol system small molecules is achieved, a phase structure, which is neither miscible nor immiscible, will be obtainable.…”

Section: Introductionmentioning

confidence: 99%

Organic hybrid of chlorinated polyethylene and hindered phenol. I. Dynamic mechanical properties

Yamagishi

Nakamoto

et al. 2000

J. Polym. Sci. B Polym. Phys.

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Section: Introductionmentioning

confidence: 99%

Organic hybrid of chlorinated polyethylene and hindered phenol. I. Dynamic mechanical properties

Yamagishi

Nakamoto

et al. 2000

J. Polym. Sci. B Polym. Phys.

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“…The viscoelasticity and morphology of CPE/DBS had been reported by Inoue et al [2] and Wu et al [3]. They found that the peak maximum value of loss modulus (E max ) and loss tangent area (TA) increased in proportion to DBS content (φ DBS ) at lower φ DBS , where TA is defined as the peak area around the glass transition in the temperature dependence of loss tangent (tan δ).…”

Section: Introductionmentioning

confidence: 69%

Viscoelasticity and morphology of an organic hybrid of chlorinated polyethylene and N,N′-dicyclohexyl-2-benzothiazolyl sulfenamide

Akasaka¹,

Shimura²,

Sasaki³

et al. 2005

Composite Interfaces

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The viscoelasticity and morphology of an organic hybrid of chlorinated polyethylene (CPE) and N,N -dicyclohexyl-2-benzothiazolyl sulfenamide (DBS) were studied by means of tensile and shear complex modulus and differential scanning calorimetry (DSC) analysis. Tensile and shear loss modulus (E and G ), which are shown as indexes of vibration damping performance, showed one peak corresponding to the glass transition. The peak maximum values (E max and G max ) increased in proportion to DBS content (φ DBS ) and the slope of E max against φ DBS became steep above a certain DBS content, i.e. the critical DBS content (φ c ). A high damping material was obtained by the addition of DBS, especially when DBS content was higher than φ c . These increases in loss moduli below and above φ c are caused by the interaction between CPE and DBS molecules and the friction between DBS molecules, respectively. It was found that CPE/DBS is a compatible blend at all DBS contents from the analysis of the glass transition temperature with DSC. Furthermore, the influence of chlorine content in CPE on those characteristics was investigated. Higher chlorine content led to lower φ c , a decrease in E below φ c and an increase in E above φ c . These results are due to the increase in the number of dichloromethylene units (CCl 2 ), which reduces the α-hydrogen atom in CPE.

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“…For example, rubber/hindered phenol or hindered amine such as tetrakis[methylene-3-(3-5-di-tetra-butyl-4-hydroxy phenyl) propionyloxy]methane (AO-60) [11], triethylene glycolbis-[3-(3-tertbutyl-4-hydroxy-5-methyl phenyl)propionyloxy] (AO-70) [11], 3,9-bis[1,1-dimethyl-2-{b-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-eth yl]-2,4,8,10-tetraoxaspiro [5,5]-undecane (AO-80) [12], 2,20-methylene bis(6-tert-butyl-4-methylphenol) (AO-2246) [13], and N,N-dicyclohexyl-2-benzothia zolylsulfenamide (DZ) [14] have been widely investigated as a type of high performance damping material [15]. Moreover, in order to explore the damping mechanism in the hybrids, Zhao et al first investigate the damping mechanism of the nitrile-butadiene rubber (NBR)/AO-80 hybrids in a quantitative manner with the help of molecular dynamics (MD) simulation and attribute the cause of maximum dynamic property to the largest number of H-bonds and the greatest binding energy as well as the minimum fractional free volume (FFV) by a combination with the experimental results [16].…”

Section: Introductionmentioning

confidence: 99%

Molecular insights into the damping mechanism of poly(vinyl acetate)/hindered phenol hybrids by a combination of experiment and molecular dynamics simulation

Zhang

et al. 2015

RSC Adv.

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The fundamental mechanism of the improved damping properties of poly(vinyl acetate) (PVAc) contributed by the introduction of hindered phenol was systematically elucidated by two-dimensional infrared (2D IR) spectroscopy, dynamic mechanical analysis (DMA), differential scanning calorimeter (DSC), X-ray diffraction (XRD) and molecular dynamics (MD) simulation. 2D IR results revealed the hydrogen bonds (H-bonds) evolution from intermolecular H-bonds to H-bonds network of PVAc/hindered phenol. Subsequent DMA results revealed that the damping properties of PVAc exhibited two different degrees of the improvement due to the addition of hindered phenol. Meanwhile, DSC results showed that all hybrids were miscible as concentration fluctuations change irregularly. According to the XRD observation of only amorphous hindered phenol existing in PVAc matrix, further MD simulation,based on an amorphous cell, characterized the number of H-bonds, the binding energy and the fractional free volume (FFV) of the hybrids. It was observed that the variation tendency of the simulation data was in accordance with the experimental results. * Therefore, the damping mechanism of PVAc/hindered phenol hybrids was proposed through a detailed analysis on the synergy effects of the number of intermolecular H-bonds and binding energy between PVAc and hindered phenol as well as the FFV or dynamic heterogeneity.

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Viscoelastic properties of an organic hybrid of chlorinated polyethylene and a small molecule

Cited by 44 publications

References 16 publications

Organic hybrid of chlorinated polyethylene and hindered phenol. I. Dynamic mechanical properties

Organic hybrid of chlorinated polyethylene and hindered phenol. I. Dynamic mechanical properties

Viscoelasticity and morphology of an organic hybrid of chlorinated polyethylene and N,N′-dicyclohexyl-2-benzothiazolyl sulfenamide

Molecular insights into the damping mechanism of poly(vinyl acetate)/hindered phenol hybrids by a combination of experiment and molecular dynamics simulation

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