Online monitoring of Silicone Network Formation by Means of In-Situ Mid-Infrared Spectroscopy

Scherble, Jonas; Iván, Béla; Mülhaupt, Rolf

doi:10.1002/1521-3935(200208)203:12<1866::aid-macp1866>3.0.co;2-g

Cited by 38 publications

(38 citation statements)

References 29 publications

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“…22 2-(Trimethylsilyloxy)ethyl acrylate (TMSOEA) was synthesized as described previously. 37 Adhesive poly-(propylene)-tape (PP; Tesafilm Glasklar) was purchased from Tesa AG (Hamburg, Germany). All other chemicals and solvents were purchased from Sigma-Aldrich or Merck.…”

Section: ' Materials and Methodsmentioning

confidence: 99%

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

et al. 2011

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Amphiphilic polymer conetworks (APCNs) are materials with a very large interface between their hydrophilic and hydrophobic phases due to their nanophase-separated morphologies. Proteins were found to enrich in APCNs by up to 2 orders of magnitude when incubated in aqueous protein solutions, raising the question of the driving force of protein uptake into APCNs. The loading of poly(2-hydroxyethyl acrylate)-linked by-poly(dimethylsiloxane) (PHEA-l-PDMS) with heme proteins (myoglobin, horseradish peroxidase, hemoglobin) and lipases was studied under variation of parameters such as incubation time, pH, concentration of the protein solution, and conetwork composition. Adsorption of enzymes to the uncharged interface is the main reason for protein uptake, resulting in protein loading of up to 23 wt %. Experimental results were supported by computation of electrostatic potential maps of a lipase, indicating that hydrophobic patches are responsible for the adsorption to the interface. The findings underscore the potential of enzyme-loaded APCNs in biocatalysis and as sensors.

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Section: ' Materials and Methodsmentioning

confidence: 99%

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

et al. 2011

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“…Amphiphilic conetworks (APCNs) composed of chemically bonded hydrophilic and hydrophobic polymer chains have gained significant interest in recent years (see, e.g., refs 1–26. and references therein).…”

Section: Introductionmentioning

confidence: 99%

Preparation of highly branched polyethylene using (α‐diimine) nickel complex covalently supported on modified SiO₂

Jiang

Zhu

et al. 2006

J of Applied Polymer Sci

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Bis(4-(4-amine-3,5-diisopropylbenzyl)-2,6-diisopropylphenylimino) acenaphthene NiBr 2 (Catalyst I) was synthesized. The complex covalently supported on Et 3 Altreated silica (SC) and used for ethylene polymerization was produced with cocatalyst of common inexpensive alkylaluminum compounds. Polyethylenes (PEs) with branching numbers of 12.94 (1000C) to 116.02 (1000C) were prepared in heptane. The polymerization conditions, such as the cocatalyst, Al/Ni ratio, and temperature, had significant effects on catalytic activity and properties of polyethylenes. Confirmed by high-temperature 13 C NMR, the polyethylenes synthesized contain significant amounts of not only methyl but also ethyl, propyl, butyl, pentyl, and other long branches (longer than six carbons). The branching degree of polyethylenes increased with temperature, while their molecular weight and melting point decreased correspondingly, resulting in linear semicrystalline to totally amorphous polymers. The formation of the branches could be illustrated by the chain walking mechanism, which controlled their specific spacing and conformational arrangements with one another.

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“…APCNs are water-swellable materials that have much stronger mechanical properties than conventional hydrogels due to the presence of a reinforcing hydrophobic phase. [47][48][49][50][51] The combination of PHEAl -PDMS with a PEE membrane resulted in a composite material, here named APCN/PEE, that effectively closed punctures, while having water evaporation properties similar to unmodifi ed PEE membranes. [ 46,47 ] We chose APCNs in which hydrophilic poly-(2-hydroxyethyl acrylate) (PHEA) was cross-linked with hydrophobic poly(dimethylsiloxane) (PDMS) because these APCNs are rubbery, elastic materials both in dry and wet state.…”

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confidence: 99%

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

et al. 2015

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Breathable and waterproof membranes that self-seal damaged areas are prepared by modifying a poly(ether ester) membrane with an amphiphilic polymer co-network. The latter swells in water and the gel closes punctures. Damaged composite membranes remain water tight up to pressures of at least 1.6 bar. This material is useful for applications where water-vapor permeability, self-sealing properties, and waterproofness are desired, as demonstrated for a medical cooling device.

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Online monitoring of Silicone Network Formation by Means of In-Situ Mid-Infrared Spectroscopy

Cited by 38 publications

References 29 publications

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

Preparation of highly branched polyethylene using (α‐diimine) nickel complex covalently supported on modified SiO₂

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

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Online monitoring of Silicone Network Formation by Means of In-Situ Mid-Infrared Spectroscopy

Cited by 38 publications

References 29 publications

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

Solid−Solid Interface Adsorption of Proteins and Enzymes in Nanophase-Separated Amphiphilic Conetworks

Preparation of highly branched polyethylene using (α‐diimine) nickel complex covalently supported on modified SiO2

Self‐Sealing and Puncture Resistant Breathable Membranes for Water‐Evaporation Applications

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Product

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Preparation of highly branched polyethylene using (α‐diimine) nickel complex covalently supported on modified SiO₂