Structure and properties of an interpenetrating polymer network-like system consisting of polystyrene-polyethylene: 1. Synthesis, elastomeric and thermoanalytical characterization

Borsig, Eberhard; Fiedlerová, Agnesa; Häusler, K. G.; Sambatra, R.M.; Michler, Goerg H.

doi:10.1016/0032-3861(93)90720-u

Cited by 25 publications

(7 citation statements)

References 10 publications

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“…Please note that phase separation and grafting between the two phases are not typical for an ideal IPN. Thus, such structures were called “IPN‐like” material 13…”

Section: Resultsmentioning

confidence: 99%

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Membrane properties of microporous structures prepared from polyethylene/polymethacrylate IPN

Pionteck¹,

Hu²,

Schulze³

2003

J of Applied Polymer Sci

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Polyethylene/polymethacrylate interpenetrating polymer networks (PE/PMA IPN) form a matrixparticle or a co-continuous morphology that can be adjusted by the composition and synthesis conditions. Based on the fact that PMA degrades whereas PE crosslinks when they are exposed to energetic irradiation, we developed a new approach to create a porous structure by electron beam irradiation. IPN systems that differ in the methacrylate components and composition were studied. One system contains poly(butyl methacrylate-co-methyl methacrylate) (BMA-co-MMA) and the other contains poly(dodecyl methacrylateco-ethyl methacrylate) (DMA-co-EMA) as the PMA phase. After electron beam irradiation followed by extraction with xylene, both IPN systems have a porous structure that is permeable to water. However, the structure and size of the pores depend on the PMA components and the synthesis conditions. PMAs with long aliphatic side chains degrade less than PMAs containing only short aliphatic pendant groups. Therefore, the PE/BMA-co-MMA IPN forms bigger pores than PE/DMA-co-EMA, resulting in a higher water flux. The molecular cutoffs of the IPN are characteristic for microfiltration or ultrafiltration.

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“…Please note that phase separation and grafting between the two phases are not typical for an ideal IPN. Thus, such structures were called “IPN‐like” material 13…”

Section: Resultsmentioning

confidence: 99%

“…The IPN films were prepared by an in situ method 13. PE was dissolved in the methacrylate mixture containing BDDM as crosslinking agent for the methacrylates at ∼105 °C.…”

Section: Methodsmentioning

confidence: 99%

Membrane properties of microporous structures prepared from polyethylene/polymethacrylate IPN

Pionteck¹,

Hu²,

Schulze³

2003

J of Applied Polymer Sci

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“…One assumes that the polymerization of vinyl monomers and their crosslinking occurred first; this may be accompanied by grafting of vinyl monomers onto PE and the incorporation of PE chains into a vinyl network. In the last stages of reaction, a PE network was formed as a result of the presence of peroxide (and absence of a monomer) 1–3…”

Section: Methodsmentioning

confidence: 99%

“…The method used for the preparation of interpenetrating polymer networks is described in detail in our previous papers 1–9. The interpenetrating polymer network (IPN)‐like method used makes it possible to mix up two types of immiscible polymers such as polyethylene–vinyl polymer (styrene, methacrylate copolymers) and offers the possibility of obtaining heterogeneous polymer systems with interesting mechanical and optical properties10–12 and also cation‐exchange membranes 13–14…”

Section: Introductionmentioning

confidence: 99%

Morphology of the transparent IPN‐like system PE: (BMA‐co‐S)

Borsig

Thomann

Fiedlerová

et al. 2001

J of Applied Polymer Sci

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ABSTRACT:In the study of interpenetrating polymer networks (IPN)-like systems consisting of polyethylene (PE) and butyl methacrylate (BMA)-styrene (S) copolymer PE/(BMA-co-S), the effect of the crosslinker on the morphology of IPN by using electron microscopy and atomic force microscopy (AFM) was investigated. The IPN-like system PE/(BMA-co-S) represents a two-phase system with finely dispersed domains of crosslinked PE matrix. The interphase between dispersed domains and PE matrix is inhomogeneous and is considered the most interpenetrated part of this IPN-like system. The size of the domains decreases with the content of crosslinker used. The AFM micrographs allowed the observation of PE lamellae with lengths of about 25 nm.

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“…IPN based on polyethylene (PE) have been synthesized first by the in situ method by Borsig et al [4]. PE was dissolved in a mixture of styrene and divinyl crosslinker and subsequently the styrene was polymerized.…”

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confidence: 99%

Synthesis, electron irradiation modification and characterization of polyethylene/poly(butyl methacrylate-co-methyl methacrylate) interpenetrating polymer network

Pompe

Schulze

et al. 1998

Polym. Adv. Technol.

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The present work reports the preparation of a porous structure by electron beam irradiation of interpenetrating polymer network (IPN) based on polyethylene and poly(methyl methacrylate‐co‐butyl methacrylates). Thin IPN films were synthesized by in situ polymerization. Low‐density polyethylene (PE) was used as the first IPN component, and the second IPN component was formed by copolymerization of methyl methacrylate and butyl methacrylate. After the synthesis the methacrylic phase is finely dispersed in a PE matrix. Porous films of these materials were obtained by decomposition of the polymethacrylate phase by means of electron radiation followed by extraction with xylene. The thermal stability in N2 atmosphere of the irradiated and extracted IPN was improved compared with the unirradiated samples. Three temperature regions of weight loss were observed, two of them caused by the copolymer and one by the PE. The lowering of the melting temperature of PE observed by differential scanning calorimetry analysis indicated an increase in crosslinking caused by irradiation. Morphology changes were studied by scanning electron microscopy which revealed a porous surface structure of the irradiated and extracted samples. Flux measurements showed that some irradiated samples were permeable to ethanol, demonstrating an interconnected porous structure which may be relevant for membranes. © 1998 John Wiley & Sons, Ltd.

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Structure and properties of an interpenetrating polymer network-like system consisting of polystyrene-polyethylene: 1. Synthesis, elastomeric and thermoanalytical characterization

Cited by 25 publications

References 10 publications

Membrane properties of microporous structures prepared from polyethylene/polymethacrylate IPN

Membrane properties of microporous structures prepared from polyethylene/polymethacrylate IPN

Morphology of the transparent IPN‐like system PE: (BMA‐co‐S)

Synthesis, electron irradiation modification and characterization of polyethylene/poly(butyl methacrylate-co-methyl methacrylate) interpenetrating polymer network

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