Effect of ligno-derivatives on thermal properties and degradation behavior of poly(3-hydroxybutyrate)-based biocomposites

Bertini, Fabio; Canetti, Maurizio; Cacciamani, Adriana; Elegir, Graziano; Orlandi, Marco; Zoia, Luca

doi:10.1016/j.polymdegradstab.2012.03.009

Cited by 112 publications

(83 citation statements)

References 41 publications

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“…Also, lignin is utilized as a stabilizer (antioxidant) for plastics (Kadla and Kubo, 2004). Other authors, have proved that lignin has an important influence on the thermal and mechanical behavior in different polymers (Bertini et al, 2012;Bhat et al, 2013;Kaewtatip and Thongmee, 2013). Furthermore, lignin has been investigated as compatibilizer between natural fibers and polymer matrix (Graupner, 2008;Morandim-Giannetti et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Among its weaknesses are low ductility and poor thermal stability (Jamshidian et al, 2012). Other studies have reported the ability of lignin to increase the thermal stability of the different plastics materials (Bertini et al, 2012;Kaewtatip and Thongmee, 2013;Sahoo et al, 2011), as well as its plasticizing effect provided to other materials (Baumberger et al, 1998;Wang et al, 2012). Therefore, obtaining composite materials formed by PLA matrix and lignin as filler has generated much interest due the possibility of elaboration of environmentally friendly composite with relatively low production cost.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kraft lignin as filler in PLA to improve ductility and thermal properties

Gordobil

Delucis

Egüés

et al. 2015

Industrial Crops and Products

245

176

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kraft lignin as filler in PLA to improve ductility and thermal properties

Gordobil

Delucis

Egüés

et al. 2015

Industrial Crops and Products

245

176

View full text Add to dashboard Cite

“…Degradasi termal lignin yang lebar ini disebabkan karena adanya berbagai gugus fungsi oksigen dalam struktur lignin. Pada umumnya lignin mulai terdegradasi secara perlahan pada suhu 40°C dengan degradasi termal utama terjadi pada kisaran suhu 300-500°C yang berhubungan dengan fragmentasi ikatan antar-unit 27 . Degradasi termal utama ini berkaitan dengan pembentukan hidrokarbon aromatic, phenolic, hydroxyphenolic dan senyawa jenis guaiacyl-/ syringyl yang kebanyakan produk memiliki gugus phenolic -OH37.…”

Section: Hasil Dan Pembahasanunclassified

Pengaruh Penambahan Lignin Terhadap Stabilitas Termal Biokomposit Poliasam Laktat / Lignin

Ghozali¹,

Irawan²,

Waskitoaji³

2018

J. Penelit Pascapanen Pertan

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ABSTRAKBiomassa merupakan sumber daya alam terbarukan yang ketersediaanya sangat melimpah di Indonesia yang memiliki potensi besar untuk dikembangkan sebagai polimer biodegradabel terbarukan. Poliasam laktat atau polylactic acid (PLA) dan lignin merupakan material polimer biodegradabel yang secara ekonomi memiliki potensi yang sangat besar untuk dikembangkan. Penelitian ini bertujuan untuk mempelajari pengaruh penambahan lignin terhadap stabilitas termal biokomposit PLA/Lignin. Pembuatan biokomposit PLA/ Lignin dilakukan dengan cara mencampurkan PLA dengan lignin dalam rheomix dengan suhu 200ºC, kecepatan pengadukan 70 rpm selama 30 menit. Komposisi lignin yang ditambahkan adalah 5, 10, 15 dan 20 phr. Analisis menggunakan Fourier Transform Infra Red (FTIR) dilakukan untuk menentukan gugus fungsi biokomposit PLA/Lignin. Stabilitas termal biokomposit PLA/Lignin dipelajari menggunakan Termogravimetric Analysis (TGA). Hasil analisa stabilitas termal menunjukkan degradasi termal utama biokomposit PLA/Lignin pada berbagai komposisi terjadi pada rentang suhu 230-360°C. Penambahan lignin ke dalam biokomposit PLA/Lignin akan meningkatkan massa tersisa sehingga dapat meningkatkan stabilitas termal biokomposit PLA/Lignin tersebut. Meningkatnya massa yang tersisa ini disebabkan oleh struktur kimia lignin, yang menunjukkan kurang berkontribusi terhadap kemampuan terbakar material yang disebabkan karena tingginya kemampuan menjadi arang dan rendahnya pelepasan panas ketika dibakar, sehingga sangat berpotensi digunakan sebagai flame retardant untuk berbagai aplikasi. Biomass is a highly abundant renewable natural resource available in Indonesia that holds great potential to be developed as a renewable biodegradable polymer. Polylactic acid (PLA) and lignin are among of those biodegradable polymer materials with a great potential of economic value to be developed. This research is purposed to study the effect of lignin addition on thermal stability of PLA/Lignin biocomposites. PLA/Lignin biocomposites has been manufactured by mixing PLA and lignin into rheomix at a temperature of 200°C with a stirring speed of 70 rpm for 30 minutes. The composition of lignin added was 5, 10, 15 and 20 phr. Fourier Transform Infra-Red (FTIR) spectrum analysis was conducted to determine the functional groups of PLA/Lignin biocomposites.The thermal stability was analyzed by termogravimetric analysis (TGA) and the results showed that the main thermal degradation occurred in temperature range of 230-360°C. The addition of lignin into PLA/Lignin biocomposites could increase residual mass which improves the thermal stability of PLA/Lignin bicomposites. The increase in the residual mass was due to the chemical structure of lignin, which indicates the less contribution to the material's burning ability due to its high ability to become charcoal and low heat release when burned, making it potentially used as a flame retardant for various applications.

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“…It also absorbs UV radiation and exhibits flame-retardant properties (De Chirico et al 2003). Furthermore, lignin can be used in epoxy resins (Lora and Glasser 2002), green composites (Bertini et al 2012;Thakur et al 2014), and as filler in tires (Frigerio et al 2014;Barana et al 2016a).…”

Section: Introductionmentioning

confidence: 99%

Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study

Zoia¹,

Salanti²,

Tolppa³

et al. 2017

BioResources

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The lignocellulosic materials produced after each step of a biorefinery plant using simultaneous saccharification and fermentation (SSF) technology on wheat straw (Triticum spp.) for bioethanol production were characterized by spectroscopic and chromatographic techniques in order to investigate the macromolecular interactions between the lignin and polysaccharides. In order to valorize the lignin cakes, a purification step was set up and the extraction conditions (acid pretreatment, temperature, time, and NaOH concentration) were optimized by a chemiometric approach in terms of yield and purity. Residual carbohydrate impurities, free and/or chemically bonded to lignin (lignin carbohydrates complexes), were individuate as the most critical factor for a satisfactory lignin extraction. Finally, the lignin samples collected according to the optimized extraction conditions were chemically characterized and low molecular weight, high phenols concentration, and low carboxylic acids content were recognized as interesting features for industrial applications.

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Effect of ligno-derivatives on thermal properties and degradation behavior of poly(3-hydroxybutyrate)-based biocomposites

Cited by 112 publications

References 41 publications

Kraft lignin as filler in PLA to improve ductility and thermal properties

Kraft lignin as filler in PLA to improve ductility and thermal properties

Pengaruh Penambahan Lignin Terhadap Stabilitas Termal Biokomposit Poliasam Laktat / Lignin

Valorization of Side-Streams from a SSF Biorefinery Plant: Wheat Straw Lignin Purification Study

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