Polysiloxane–Cellulose acetate butyrate cellulose interpenetrating polymers networks close to true IPNs on a large composition range. Part II

Vidal, Frédéric; Fichet, Odile; Laskar, Judith; Teyssié, Dominique

doi:10.1016/j.polymer.2006.03.030

Cited by 23 publications

(12 citation statements)

References 10 publications

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“…"Semi-IPN" is used in reference to an IPN in which one component remains uncrosslinked [94,95]. The T g of an IPN is expected to be intermediate to the neat component T g 's, as shown in Figure 14 for an IPN [96] and Figure 15 for a semi-IPN [97]. Even though the constituents are incompatible, small phase domains are obtained, homogenizing the properties.…”

Section: Interpenetrating Polymer Network An Interpenetrating Polymmentioning

confidence: 99%

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Viscoelastic Behavior of Rubbery Materials

Roland¹

2011

145

124

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Contents* Early molecular theories of rubber hyperelasticity were called kinetic theories, in correspondence to the behavior of ideal gases (the molecules of which have neither size nor mutual interactions). The elastic forces of an ideal rubber are caused by thermal motion of the network chains attempting to restore the higher entropy, isotropic state; thus, analogous to ideal gases, ideal rubber elasticity is a statistical effect. In real materials there is also an energy contribution (negative or positive) due to the difference in energy between trans and gauche conformations of the repeat units.of alternative networks -interpenetrating, double, bimodal, heterogeneous, and deswollenare discussed at the conclusion of the chapter.

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Section: Interpenetrating Polymer Network An Interpenetrating Polymmentioning

confidence: 99%

“…Loss tangent for polydimethylsiloxane -acetate butyrate cellulose IPNs having the indicated weight % of PDMS. Data from ref [96]. …”

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confidence: 99%

Viscoelastic Behavior of Rubbery Materials

Roland¹

2011

145

124

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“…Semi-IPN refers to IPNs in which only one component is cross-linked. 15,16 The glass transition temperature, T g , of an IPN is intermediate to those of the pure components, as shown in Figure 2 for an IPN 17 and Figure 3 for a semi-IPN. 18 The phase morphologies are not homogeneous, but the domains are small, so that properties such as the segmental dynamics tend to be averages.…”

Section: A Interpenetrating Polymer Networkmentioning

confidence: 94%

“…-Dynamic mechanical loss tangent for interpenetrating networks of polydimethylsiloxane and acetate butyrate cellulose; the concentration by weight of the former is indicated. 17 For most compositions, the phase morphology is sufficiently fine to yield only one glass transition. …”

Section: Introductionmentioning

confidence: 99%

Unconventional Rubber Networks: Circumventing the Compromise Between Stiffness and Strength

Roland

2013

Rubber Chemistry and Technology

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The failure properties of rubbery networks exhibit a maximum as a function of cross-link density or modulus. To avoid excess creep, elastomers are usually formulated such that their state of cure falls past this maximum, which means there is an inevitable compromise between modulus and failure properties (stiffness and strength). This review describes various approaches to circumventing the problem by the use of unconventional network structures. The obtainable improvements in mechanical properties can be substantial (e.g

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“…Moreover, the glass transition in IPN 24 is noticeably broadened, with a larger contribution at higher temperatures indicative of perturbations to the polyacrylate phase structure by the PPSHS network. 33,34 Scheme 10. Formation of Interpenetrating Polymer Network IPN 24 comprised of PPSHS 15a and cross-linked poly(n-butyl acrylate)…”

Section: Functionalization and Redox Chemistrymentioning

confidence: 99%

Functional, Redox-Responsive Poly(phenylene sulfide)-Based Gels

2019

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Poly(p-phenylene sulfide) (PPS) is a highly robust thermoplastic with outstanding thermal and chemical stability. However, development of functional PPS-based materials is hampered by harsh synthetic conditions and poor solubility. As an alternative to nucleophilic aromatic substitution (SNAr), we report herein on the use of benzoquinone conjugate addition chemistry to prepare PPS-derivatives bearing redoxactive hydroquinones in the polymer backbone. Specifically, we utilize thiosilanes as thiol surrogates in order to attenuate unproductive redox-isomerization reactions and to provide a thermodynamic driving force for polymerization. The silyl transfer conjugate addition process results in a poly(phenylene silylhydroquinone sulfide) (PPSHS) amenable to several divergent modes of functionalization. Notably, the so-formed PPSHS exist as gels which swell organic solvents and exhibit distinct changes in color and swelling upon redox changes. By repeated cycling of oxidation and thiol conjugate addition, the crosslinked networks can be depolymerized under ambient conditions. Finally, we prepared an interpenetrating polymer network (IPN) comprised of PPSHS and cross-linked poly(n-butyl acrylate) which exhibits a significant enhancement in thermomechanical properties over the base materials.

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Polysiloxane–Cellulose acetate butyrate cellulose interpenetrating polymers networks close to true IPNs on a large composition range. Part II

Cited by 23 publications

References 10 publications

Viscoelastic Behavior of Rubbery Materials

Viscoelastic Behavior of Rubbery Materials

Unconventional Rubber Networks: Circumventing the Compromise Between Stiffness and Strength

Functional, Redox-Responsive Poly(phenylene sulfide)-Based Gels

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