Investigation of accelerated aging of lignin-containing polymer materials

Goliszek, Marta; Podkościelna, Beata; Sevastyanova, Olena; Fila, K.; Chabros, Artur; Pączkowski, Przemysław

doi:10.1016/j.ijbiomac.2018.11.141

Cited by 35 publications

(15 citation statements)

References 28 publications

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“…Determination of long-term material performance and behavior of polymers has been investigated using the concept and methodology of thermal accelerated aging [ 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. After samples had reached their gel point and fully cured, which was determined by rheology and the technical data sheet, respectively, in a 25 °C oven, they were grouped to be thermally aged.…”

Section: Methodsmentioning

confidence: 99%

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

et al. 2021

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Primarily used as an encapsulant and soft adhesive, Sylgard 184 is an engineered, high-performance silicone polymer that has applications spanning microfluidics, microelectromechanical systems, mechanobiology, and protecting electronic and non-electronic devices and equipment. Despite its ubiquity, there are improvements to be considered, namely, decreasing its gel point at room temperature, understanding volatile gas products upon aging, and determining how material properties change over its lifespan. In this work, these aspects were investigated by incorporating well-defined compounds (the Ashby–Karstedt catalyst and tetrakis (dimethylsiloxy) silane) into Sylgard 184 to make modified formulations. As a result of these additions, the curing time at room temperature was accelerated, which allowed for Sylgard 184 to be useful within a much shorter time frame. Additionally, long-term thermal accelerated aging was performed on Sylgard 184 and its modifications in order to create predictive lifetime models for its volatile gas generation and material properties.

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Section: Methodsmentioning

confidence: 99%

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

et al. 2021

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“…These peaks are associated with the total thermal degradation of materials. Among the composites with acrylate monomers, which are less reactive than those with a styrene monomer, homopolymerization and cyclization processes can take place [44] and can thus result in an increase in material heterogeneity. An exothermic signal was visible at 250 • C for all the materials containing 10% modified lignin (BA + 10% L-M and EHA + 10% L-M), and it could be assigned to the further polymerization processes of unreacted L-M.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…Sun et al [43] prepared novel lignin epoxy composites via the covalent incorporation of depolymerized lignin epoxide as a submicron filler in an epoxy matrix and showed that the composites had better mechanical properties than neat epoxy. Goliszek et al [44] investigated the accelerated aging of lignin-containing polymer composites of styrene and methyl methacrylate. Wood et al [45] used lignin as a compatibilizer in hemp-epoxy composite samples and showed that the addition of lignin improved the structural properties of the obtained composites.…”

Section: Introductionmentioning

confidence: 99%

Preparation, Thermal, and Mechanical Characterization of UV-Cured Polymer Biocomposites with Lignin

et al. 2020

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The preparation and the thermal and mechanical characteristics of lignin-containing polymer biocomposites were studied. Bisphenol A glycerolate (1 glycerol/phenol) diacrylate (BPA.GDA) was used as the main monomer, and butyl acrylate (BA), 2-ethylhexyl acrylate (EHA) or styrene (St) was used as the reactive diluent. Unmodified lignin (L) or lignin modified with methacryloyl chloride (L-M) was applied as an ecofriendly component. The influences of the lignin, its modification, and of the type of reactive diluent on the properties of the composites were investigated. In the biocomposites with unmodified lignin, the lignin mainly acted as a filler, and it seemed that interactions occurred between the hydroxyl groups of the lignin and the carbonyl groups of the acrylates. When methacrylated lignin was applied, it seemed to take part in the creation of a polymer network. When styrene was added as a reactive diluent, the biocomposites had a more homogeneous structure, and their thermal resistance was higher than those with acrylate monomers. The use of lignin and its methacrylic derivative as a component in polymer composites promotes sustainability in the plastics industry and can have a positive influence on environmental problems related to waste generation.

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“…Usually, ageing tests are rather long-term, lasting several years or even decades, and, therefore, accelerated ageing tests are applied to imitate specific environmental conditions at an increased rate. Moreover, these studies allow predicting the performance and investigate the degradation mechanisms of the materials and are very important to understand the material ageing behaviour for specific conditions and applications [ 92 , 93 , 94 , 95 ].…”

Section: Durability Performance Of Bpnmentioning

confidence: 99%

Durability of Biodegradable Polymer Nanocomposites

et al. 2021

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Biodegradable polymers (BP) are often regarded as the materials of the future, which address the rising environmental concerns. The advancement of biorefineries and sustainable technologies has yielded various BP with excellent properties comparable to commodity plastics. Water resistance, high dimensional stability, processability and excellent physicochemical properties limit the reviewed materials to biodegradable polyesters and modified compositions of starch and cellulose, both known for their abundance and relatively low price. The addition of different nanofillers and preparation of polymer nanocomposites can effectively improve BP with controlled functional properties and change the rate of degradation. The lack of data on the durability of biodegradable polymer nanocomposites (BPN) has been the motivation for the current review that summarizes recent literature data on environmental ageing of BPN and the role of nanofillers, their basic engineering properties and potential applications. Various durability tests discussed thermal ageing, photo-oxidative ageing, water absorption, hygrothermal ageing and creep testing. It was discussed that incorporating nanofillers into BP could attenuate the loss of mechanical properties and improve durability. Although, in the case of poor dispersion, the addition of the nanofillers can lead to even faster degradation, depending on the structural integrity and the state of interfacial adhesion. Selected models that describe the durability performance of BPN were considered in the review. These can be applied as a practical tool to design BPN with tailored property degradationand durability.

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Investigation of accelerated aging of lignin-containing polymer materials

Cited by 35 publications

References 28 publications

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

Long-Term Thermal Aging of Modified Sylgard 184 Formulations

Preparation, Thermal, and Mechanical Characterization of UV-Cured Polymer Biocomposites with Lignin

Durability of Biodegradable Polymer Nanocomposites

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