An assembly strategy of polylactic acid (PLA)-SiO2 nanocomposites embedded in polypropylene (PP) matrix

Palma‐Ramírez, D.; Torres‐Huerta, A.M.; Domínguez‐Crespo, M.A.; Ponce-Hernández, J.S.; Brachetti-Sibaja, S.B.; Rodríguez-Salazar, A.E.; Urdapilleta-Inchaurregui, V.

doi:10.1016/j.jmrt.2021.07.063

Cited by 11 publications

(10 citation statements)

References 67 publications

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“…For the pure PLA films, the broad peaks appeared between 10° and 25° 2θ without any spikes, which indicated that the PLA films were completely amorphous phase 49,50 . In contrast, for the NI/PLA film, the peak position did not change, but the addition of nisin resulted in a sharper and more intense peak, with the same results as for Hassan et al 51 It was shown that the introduction of nisin affected the arrangement of PLA polymer chains and improved the orderliness.…”

Section: Resultssupporting

confidence: 62%

Study on the property of mesoporous silica nanoparticles loaded with nisin for poly (lactic acid)‐based packaging film

Jiang

Zhu

et al. 2023

Polymer Composites

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Nisin was loaded in mesoporous silica nanoparticles (MSN) (0, 1, 2 and 3 wt%) and incorporated into poly (lactic acid) (PLA) matrix by casting method. The mechanical property, water vapor permeability, thermal property, and antimicrobial property of PLA nanocomposite films were measured. And the internal structure of the composite film was observed through the Scanning electron microscope. Meanwhile, the kinetic of nisin releasing from food simulated solution was investigated and the migration model was established. The result showed that mesoporous silica had an effect on the mechanical and thermal property of the composite films. Both water vapor transmission rate (WVP) and oxygen permeation rate (OTR) decreased, especially for 3MSN/NI/PLA, where WVP decreased by about 9.64% and OTR decreased by 35.19%, which was beneficial to improve the preservation effect. With the addition of MSN, the amount of loaded nisin increased, and at 3MSN/NI, the nisin loading reached 88.75%, and the mesoporous silica could effectively control the release of nisin, thus prolonging the preservation effect. The release kinetic of nisin was described by Fick's law and Weibull's model. In short, the PLA nanocomposite film has the potential to be used as an antimicrobial active film by adding nisin as an antimicrobial agent.Highlights A biodegradable antimicrobial food grade film was prepared. Nisin was added to the films as an antimicrobial agent. The ordered mesoporous structure of MSN was used as a carrier of antimicrobial agent. The film effectively inhibits E. coli and S. aureus by controlling the release of nisin. Fick's law and Weibull's model were used to describe the release kinetics of Nisin.

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Section: Resultssupporting

confidence: 62%

Study on the property of mesoporous silica nanoparticles loaded with nisin for poly (lactic acid)‐based packaging film

Jiang

Zhu

et al. 2023

Polymer Composites

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“…The chemiluminescence determination of the oxidation susceptibility by isothermal procedures ( Figure 2 ) gives the measure of the stability of the attack of oxygen on the free radicals that appeared by molecular fragmentation during thermal and/or radiation degradation. The nanoparticles of silica are homogenous spread in polymer and interaction between radicals and the SiO 2 surface is defined by the dipole–dipole attraction [ 70 ]. The increase in the silica concentration broadens the oxidation induction time.…”

Section: Resultsmentioning

confidence: 99%

Stability Study of the Irradiated Poly(lactic acid)/Styrene Isoprene Styrene Reinforced with Silica Nanoparticles

Lupu

Mariș

Zaharescu³

et al. 2022

Materials

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In this paper, the stability improvement of poly(lactic acid) (PLA)/styrene-isoprene block copolymer (SIS) loaded with silica nanoparticles is characterized. The protection efficiency in the material of thermal stability is mainly studied by means of high accurate isothermal and nonisothermal chemiluminescence procedures. The oxidation induction times obtained in the isothermal CL determinations increase from 45 min to 312 min as the polymer is free of silica or the filler loading is about 10%, respectively. The nonisothermal measurements reveal the values of onset oxidation temperatures with about 15% when the concentration of SiO2 particles is enhanced from none to 10%. The curing assay and Charlesby–Pinner representation as well as the modifications that occurred in the FTIR carbonyl band at 1745 cm−1 are appropriate proofs for the delay of oxidation in hybrid samples. The improved efficiency of silica during the accelerated degradation of PLA/SIS 30/n-SiO2 composites is demonstrated by means of the increased values of activation energy in correlation with the augmentation of silica loading. While the pristine material is modified by the addition of 10% silica nanoparticles, the activation energy grows from 55 kJ mol−1 to 74 kJ mol−1 for nonirradiated samples and from 47 kJ mol−1 to 76 kJ mol−1 for γ-processed material at 25 kGy. The stabilizer features are associated with silica nanoparticles due to the protection of fragments generated by the scission of hydrocarbon structure of SIS, the minor component, whose degradation fragments are early converted into hydroperoxides rather than influencing depolymerization in the PLA phase. The reduction of the transmission values concerning the growing reinforcement is evidence of the capacity of SiO2 to minimize the changes in polymers subjected to high energy sterilization. The silica loading of 10 wt% may be considered a proper solution for attaining an extended lifespan under the accelerated degradation caused by the intense transfer of energy, such as radiation processing on the polymer hybrid.

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“…48,49 It has been reported that several types of nanofillers can act as a nucleating agent for PLA. 50,51 Palma-Rami ́rez et al 52 and Wen et al 53 found that the addition of SiO 2 nanoparticles can enhance the crystalline ability of PLA, and the nucleating effect depends on the concentration of SiO 2 nanoparticles. Hakim et al 54 studied three types of SiO 2 nanoparticles and found that the untreated SiO 2 nanoparticles show better nucleating ability than the surface-modified SiO 2 nanoparticles for epoxide-reactive agent-modified PLA.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In the field of composite materials, various hybrid fibers, i.e., nanoparticle-coated fibers, have attracted much attention, such as enhancing interfacial interaction and bringing about functionalization. − PLA is an aliphatic polyester with good biocompatibility and biodegradability and was selected as the matrix. As a semicrystalline polymer, its low crystallization rate facilitates the crystallization studies. , It has been reported that several types of nanofillers can act as a nucleating agent for PLA. , Palma-Ramírez et al and Wen et al found that the addition of SiO 2 nanoparticles can enhance the crystalline ability of PLA, and the nucleating effect depends on the concentration of SiO 2 nanoparticles. Hakim et al studied three types of SiO 2 nanoparticles and found that the untreated SiO 2 nanoparticles show better nucleating ability than the surface-modified SiO 2 nanoparticles for epoxide-reactive agent-modified PLA.…”

Section: Introductionmentioning

confidence: 99%

Impact of the Topography of Fiber Surface on the Interfacial Crystallization Behavior of Poly(lactide)

Jing,

Liu,

et al. 2023

Macromolecules

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An assembly strategy of polylactic acid (PLA)-SiO2 nanocomposites embedded in polypropylene (PP) matrix

Cited by 11 publications

References 67 publications

Study on the property of mesoporous silica nanoparticles loaded with nisin for poly (lactic acid)‐based packaging film

Study on the property of mesoporous silica nanoparticles loaded with nisin for poly (lactic acid)‐based packaging film

Stability Study of the Irradiated Poly(lactic acid)/Styrene Isoprene Styrene Reinforced with Silica Nanoparticles

Impact of the Topography of Fiber Surface on the Interfacial Crystallization Behavior of Poly(lactide)

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