Polylactide/acetylated nanocrystalline cellulose composites prepared by a continuous route: A phase interface-property relation study

Xu, Chunjiang; Chen, Jianxiang; Wu, Defeng; Chen, Yang; Lv, Qiaolian; Wang, Mengqi

doi:10.1016/j.carbpol.2016.03.058

Cited by 73 publications

(27 citation statements)

References 52 publications

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“…Suflet et al [15] produced the cellulose phosphate with a DS of ≈1. ACNCs show potential application as compatible reinforcement and nanofillers in nanocomposite production [16,17], while acetylation did not affect the nanocomposite properties, as expected, due to the lower DS on cellulose nanocrystals [13]. Up until now, there has been comparatively little research on ACNC II with various DS.…”

Section: Introductionmentioning

confidence: 88%

Characterization of Type-II Acetylated Cellulose Nanocrystals with Various Degree of Substitution and Its Compatibility in PLA Films

et al. 2017

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In order to decrease the self-agglomeration and improve the hydrophobic properties of type-II acetylated cellulose nanocrystals (ACNC II), various degree of substitution (DS) values of ACNCs were successfully prepared by a single-step method from microcrystalline cellulose with anhydrous phosphoric acid as the solvent, and acetic anhydride as the acetylation reagent, under different reaction temperatures (20-40 • C). To thoroughly investigate the DS values of ACNC II, analyses were performed using Fourier transform infrared spectroscopy (FT-IR), 13 C cross polarization-magic angle spinning (CP-MAS) nuclear magnetic resonance (NMR), and X-ray photoelectron spectroscopy (XPS). At a reaction temperature of 40 • C, the highest DS value was successfully obtained. XRD proved that the crystal structure of ACNC II with various DS values was maintained after acetylation. TEM showed the threadlike shape for ACNC II with various DS values. The ACNC II with various DS values was introduced into a polylactic acid (PLA) matrix to produce PLA/ACNC composite films, which showed improved rheological and thermal properties. This improvement was primarily attributed to good dispersion of the ACNC II, and the interfacial compatibility between ACNC II and the PLA matrix. This study aims to analyze the compatibility of ACNC II with various DS values in the PLA matrix by microstructure, crystallization, and rheological and thermal tests.

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Section: Introductionmentioning

confidence: 88%

Characterization of Type-II Acetylated Cellulose Nanocrystals with Various Degree of Substitution and Its Compatibility in PLA Films

et al. 2017

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“…In studies on PLA/CNC nanocomposites produced by solvent casting, improvement of dispersion by surface modification of CNC has mainly been achieved by surface silylation [195,196] or surface acetylation. [197,198] Xu et al [197] used surface acetylation of CNC to achieve homogeneous and nanoscale dispersion of CNC in solvent cast PLA/CNC nanocomposites, as confirmed by morphological studies as well as by the transparency of the films produced ( Figure 12). Fortunati et al [199] and Peterson et al [200] have employed the surfactant Beycostat A B09 for achieving improved dispersion of CNC in PLA/CNC nanocomposites prepared by solvent casting.…”

Section: Cnc-containing Pla Nanocompositesmentioning

confidence: 91%

Section: Processing and Characterization Of Pla Nanocompositesmentioning

confidence: 99%

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An overview of the recent advances in polylactide‐based sustainable nanocomposites

Banerjee¹,

Ray

2021

Polymer Engineering & Sci

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The article reports recent advances in reference to the existing literature and presents a knowledge gap and potential solution ideas for polylactide (PLA) nanocomposites as sustainable materials. Various types of nanoparticles have been used for the development of PLA nanocomposites; however, this work focuses on PLA nanocomposites of nanoclay, nanocelluloses, carbon nanotube, and graphene. By providing a wholistic overview of the fundamental knowledge pertaining to PLA, and covering all critical aspects related to processing, characterization, and applications of PLA nanocomposites, this review provides a direction for future developments in the field of PLA nanocomposites suitable for various advanced applications, which is still scarce in the literature, including review articles. Moreover, the effects of dispersion/distribution of various types of nanoparticles on the degradation characteristics and special properties, such as cytocompatibility, electrical conductivity, and antimicrobial properties, of PLA nanocomposites are critically reviewed with regard to the nature of nanoparticles used for nanocomposite formation. In summary, this review provides new insight into the design and formulation of advanced PLA nanocomposites for a wide range of applications as sustainable materials.

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“…10 Cellulose nanocrystals (CNC) can be isolated from different plant source or agriculture residue including sugarcane bagasse (SCB), cotton, flax and jute. 11,12 Sugarcane plays an important role as the main source to obtain sugar and this makes SCB to become a residue that is produced in large quantities every year by the sugar and alcohol industries. 13,14 Adequate use of SCB as the sources of CNC gives an added value for this material and at the same time it is a solution for this abundant agriculture waste.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of phosphoric acid-treated sugarcane bagasse cellulose nanocrystal and its thermal properties enhancement for poly(lactic acid) nanocomposites

Gan

Chow

2018

Journal of Thermoplastic Composite Materials

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Poly(lactic acid) (PLA) nanocomposites film reinforced with cellulose nanocrystals (CNCs) extracted from sugarcane bagasse fibre (SBF) was prepared by solvent casting method. The CNCs were obtained through alkaline treatment followed by sulphuric acid hydrolysis or phosphoric acid hydrolysis. The aim of this work was to evaluate the feasibility of utilizing phosphoric acid (mild acid) to extract CNC from the SBF. The properties of the CNC were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy. The thermal properties of the PLA/CNC nanocomposites were characterized using thermogravimetric analyser (TGA). TEM results demonstrated that the CNC having diameter of 5.5–6.2 nm and length of 235–300 nm. Results from XPS characterization have confirmed the existence of both sulphate group and phosphate group in the H2SO4-treated CNC (S-CNC) and H3PO4-treated CNC (P-CNC). FTIR results indicated that the presence of hydrogen bonding and chemical interaction between PLA and CNC. The thermal stability of PLA/P-CNC-10 is higher than that of PLA/S-CNC-10 nanocomposites attributed to the char formation of P-CNC in the PLA matrix.

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Polylactide/acetylated nanocrystalline cellulose composites prepared by a continuous route: A phase interface-property relation study

Cited by 73 publications

References 52 publications

Characterization of Type-II Acetylated Cellulose Nanocrystals with Various Degree of Substitution and Its Compatibility in PLA Films

Characterization of Type-II Acetylated Cellulose Nanocrystals with Various Degree of Substitution and Its Compatibility in PLA Films

An overview of the recent advances in polylactide‐based sustainable nanocomposites

Synthesis of phosphoric acid-treated sugarcane bagasse cellulose nanocrystal and its thermal properties enhancement for poly(lactic acid) nanocomposites

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