Preparation and characterization of adipic acid-modified starch microparticles/plasticized starch composite films reinforced by lignin

Spiridon, Iuliana; Teacă, Carmen‐Alice; Bodîrlău, Ruxanda

doi:10.1007/s10853-010-5210-0

Cited by 77 publications

(51 citation statements)

References 36 publications

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“…Thus, the use of lignin for the development of new materials is the most promising alternative for its revalorization [9]. It was used as filler in some composite materials [10,11]. Depending on the source and extraction method used, the physico-chemical characteristics are different and influence the properties of materials in which are embedded.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of PLA–lignin bioplastics properties before and after accelerated weathering

Spiridon¹,

Leluk

Resmeriță³

et al. 2015

Composites Part B: Engineering

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107

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Section: Introductionmentioning

confidence: 99%

Evaluation of PLA–lignin bioplastics properties before and after accelerated weathering

Spiridon¹,

Leluk

Resmeriță³

et al. 2015

Composites Part B: Engineering

Self Cite

186

107

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“…10 Besides this apparent availability, so far only a handful of attempts of using this inexpensive material as polymeric substrate for micro and nanoencapsulation. [11][12][13] This study aimed to develop a new environmentally friendly biopesticide containing azadirachtin-rich neem extracts and formulations encapsulated in nano-and microparticles prepared using lignins from sugarcane bagasse. The final products were assessed to determine any gains in stability and its efficacy in the biological control of the insect pests such as Spodoptera frugiperda and Diatraea saccharalis when compared with conventional preparations.…”

Section: Introductionmentioning

confidence: 99%

Use of Lignins from Sugarcane Bagasse for Assembling Microparticles Loaded withAzadirachta indicaExtracts for Use as Neem-Based Organic Insecticides

Costa¹,

Perlatti²,

Silva³

et al. 2016

Journal of the Brazilian Chemical Society

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Microcapsules of sugarcane bagasse lignin loaded with organic extracts of neem (Azadirachta indica) were prepared and evaluated as potential bioinsecticides. Lignins were extracted and modified by oxidation and acetylation reactions providing different biopolymers. Afterwards, they were characterized through several analytical techniques. The formulations were initially prepared as colloidal suspension of lignin nanoparticles, which were then spraydried. The products were submitted to quality control protocols using high performance liquid chromatography (HPLC), thermal and photochemical degradation studies, followed by biological assays against Spodoptera frugiperda and Diatraea saccharalis. The formulations showed increases in both thermal and photo stability of approximately 40% compared with control samples. All the formulated microparticles were efficient against the insects evaluated and required a shorter time to achieve 100% mortality than the controls. The use of sugarcane bagasse lignins to prepare microparticles improved the resistance of neem extracts against abiotic factors, retaining the biological activity of this biopesticide.

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“…Lignin has been referred to as a plasticizing agent in composite films with starch (Wu et al, 2009). However, in composites prepared using adipic acid-modified starch microparticles within a corn-starch matrix, addition of lignin produced higher tensile strength and lower elongation capacity (Spiridon, Teaca, & Bodirlau, 2011). Similarly, lignin acted as a reinforcing agent with cellulose (Rohella, Sahoo, Paul, Choudhury, & Chakravortty, 1996) or polyethylene oxide (Kadla & Kubo, 2003), in all cases providing adequate miscibility with the polymer.…”

Section: Introductionmentioning

confidence: 99%

Physical and functional characterization of active fish gelatin films incorporated with lignin

Núñez-Flores¹,

Giménez²,

et al. 2013

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a b s t r a c tIn order to provide gelatin films with antioxidant capacity, two sulphur-free water-insoluble lignin powders (L 1000 and L 2400 ) were blended with a commercial fish-skin gelatin from warm water species at a rate of 85% gelatin: 15% lignin (w/w) (GeL 1000 and GeL 2400 ), using a mixture of glycerol and sorbitol as plasticizers. The water soluble fractions of GeL 1000 and GeL 2400 films were 39.38 AE 1.73% and 46.52 AE 1.66% respectively, rendering radical scavenging capacity (2,2 0 -azino-bis(3-ethylbenzothiazoline-6-sulphonic acid, ABTS assay)) of 27.82 AE 2.19 and 15.31 AE 0.88 mg vitamin C equivalents/g film, and ferric ion reducing ability (FRAP assay) of 258.97 AE 8.83 and 180.20 AE 5.71 mmol Fe 2þ equivalents/g film, respectively. Dynamic oscillatory test on film-forming solutions and Attenuated Total Reflectance (ATR)-FTIR spectroscopy study on films revealed strong lignin-induced protein conformational changes, producing a noticeable plasticizing effect on composite films, as deduced from the study of mechanical (traction and puncture tests) and thermal properties (Differential Scanning Calorimetry, DSC). The gelatin films lose their typical transparent and colourless appearance by blending with lignin; however, the resulting composite films gained in light barrier properties, which could be of interest in certain food applications for preventing ultraviolet-induced lipid oxidation. Lignin proved to be an efficient antioxidant at non-cytotoxic concentrations, however, no remarkable antimicrobial capacity was found.

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Preparation and characterization of adipic acid-modified starch microparticles/plasticized starch composite films reinforced by lignin

Cited by 77 publications

References 36 publications

Evaluation of PLA–lignin bioplastics properties before and after accelerated weathering

Evaluation of PLA–lignin bioplastics properties before and after accelerated weathering

Use of Lignins from Sugarcane Bagasse for Assembling Microparticles Loaded withAzadirachta indicaExtracts for Use as Neem-Based Organic Insecticides

Physical and functional characterization of active fish gelatin films incorporated with lignin

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