A novel preparation method of maleic anhydride grafted syndiotactic polystyrene and its blend performance with nylon6

Lim, Jae Gon; Baik, Jung Hyun; Zhang, Xue Quan; Son, Younggon; Choi, Won Mook; Park, O Ok

doi:10.1007/s00289-002-0046-7

Cited by 21 publications

(5 citation statements)

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“…These features indicate the presence of grafted succinic anhydride on the backbone of IR. , The addition of ATA to MAn- g -IR was also identified. As shown in ATA-modified MAn- g -IR, the absorption peaks of anhydride carbonyl groups at 1860 and 1780 cm –1 were weakened, and the characteristic absorption peak of carboxylic acid groups at 1726 cm –1 emerged, indicating successful reaction of ATA to MAn- g -IR. ,, Simultaneously, new absorption peaks at 1598 and 1519 cm –1 ascribed to NCH and C–NC stretching in the triazole ring were observed. ,, These amide triazole–carboxylic acid units of rubber chains can form hydrogen-bonded architectures that act as physical cross-links, as depicted in Scheme b. , …”

Section: Resultsmentioning

confidence: 88%

Bioinspired Engineering of Two Different Types of Sacrificial Bonds into Chemically Cross-Linked cis-1,4-Polyisoprene toward a High-Performance Elastomer

et al. 2016

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The development of advanced elastomers with a combination of high strength, large extensibility, and excellent flex-cracking resistance is a huge challenge. In this contribution, we proposed a novel strategy to engineer a multinetwork by incorporating weaker sacrificial hydrogen bonds and stronger Zn-based units into a chemically cross-linked cis-1,4-polyisoprene network. The dynamic nature allows the sacrificial bonds to be ruptured and re-formed, resulting in high stretchability. During external loading, the sacrificial bonds rupture prior to fracture of the covalent network, thus dissipating energy efficiently and facilitating chain orientation to produce improved tensile modulus and fracture toughness as well as significant enhancement of flex-cracking resistance. We propose that the enhanced cracking resistance may originate from the energy dissipation and re-forming of sacrificial bonds, a new mechanism alternative to strain-induced crystallization. Overall, this concept provides unique inspiration for the design of advanced elastomers with excellent mechanical properties under both static and dynamic conditions.

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Section: Resultsmentioning

confidence: 88%

Bioinspired Engineering of Two Different Types of Sacrificial Bonds into Chemically Cross-Linked cis-1,4-Polyisoprene toward a High-Performance Elastomer

et al. 2016

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“…Therefore, modification/functionalization of PS backbone is a good way to solve this problem, which has been a subject of interest for a long time. [27 -31] Lim and colleagues [32] reported a novel solid state radical grafting of maleic anhydride on syndiotactic PS ensuing enhanced blend performance with polyamide. The potential use of polymeric blends in many demanding engineering applications is pertinent to their thermal behavior.…”

Section: Introductionmentioning

confidence: 99%

Compatibilizing effect of functionalized polystyrene blends: a study of morphology, thermal, and mechanical properties

Shabbir

Zulfiqar

Lieberwirth

et al. 2008

Surface & Interface Analysis

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Polystyrene (PS), being an amorphous polymer is immiscible with other polymers. To engender miscible blends, PS has been functionalized with an active amino-functional group on the molecular chains of PS to yield amino-substituted polystyrene (APS), which serves as a reactive compatibilizer. The compatibilization effect of amino functionalized polystyrene on the rubber toughening was explored and results were compared in terms of morphology, thermal, and mechanical properties of PS/SEBS-g-MA versus APS/SEBS-g-MA blends. In addition, the effect of rubber content on the blend morphology and mechanical properties were investigated. An appreciable change in the thermal stability of APS blends in comparison with PS blend has been probed. A marked correlation has been observed between phase morphology and thermal stability. Use of APS produced the compatibilized blends which render improved blend morphology, enhanced thermal and mechanical properties. Optimal thermal, morphological and mechanical profiles were depicted by 20-wt% APS blend.

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“…However, its inherent brittleness and poor impact and tear resistance limit it for some end uses [2]. Recently, several approaches to the modification of sPS, including syndiotactic copolymerization of styrene with a second monomer [3], post-functionalization of sPS via sulfonation or Friedel-Crafts acylation reactions [4], and graft copolymerization [5][6][7][8], have been developed to overcome these limitations.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Functional Syndiotactic Polystyrene Copolymers with Graft and Block Structures by Nitroxide-Mediated Living Radical Polymerization

Abbasian

2011

Journal of Elastomers & Plastics

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In this study, synthesis of controlled graft copolymers onto syndiotactic polystyrene using nitroxide-mediated living radical polymerization and 2, 2, 6, 6-tetramethyl-1-piperidinyloxy (TEMPO) iniferter is reported. Syndiotactic polystyrene has been synthesized using half-sandwich titanocene/ methylaluminoxane catalyst in homogenous conditions. Then, a-phenyl chloroacetylation of syndiotactic polystyrene was accomplished in a heterogeneous process using carbon disulfide as dispersing medium and a-phenyl chloroacetyl chloride and anhydrous aluminum chloride as acetylating agent and catalyst, respectively. Then, 1-hydroxy 2, 2, 6, 6-tetramethyl-1-piperidinyloxy (TEMPO-OH) was synthesized by the reduction of TEMPO with sodium ascorbate. This functional nitroxyl compound was coupled with arylated syndiotactic polystyrene. The graft copolymerizations of styrene and methyl styrene were initiated by arylated syndiotactic polystyrene carrying TEMPO groups as a macroinitiator. The product of polymerization was then heated in the presence of styrene and methyl styrene to form graft copolymer. The structure of obtained copolymer was investigated by 1 H-NMR, and Fourier transform-infrared spectroscopy, and thermal behavior of copolymers was performed by differential scanning calorimetry analyses.

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A novel preparation method of maleic anhydride grafted syndiotactic polystyrene and its blend performance with nylon6

Cited by 21 publications

References 0 publications

Bioinspired Engineering of Two Different Types of Sacrificial Bonds into Chemically Cross-Linked cis-1,4-Polyisoprene toward a High-Performance Elastomer

Bioinspired Engineering of Two Different Types of Sacrificial Bonds into Chemically Cross-Linked cis-1,4-Polyisoprene toward a High-Performance Elastomer

Compatibilizing effect of functionalized polystyrene blends: a study of morphology, thermal, and mechanical properties

Synthesis of Functional Syndiotactic Polystyrene Copolymers with Graft and Block Structures by Nitroxide-Mediated Living Radical Polymerization

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