Morphological, thermal, and mechanical properties of poly(ε‐caprolactone)/poly(ε‐caprolactone)‐grafted‐cellulose nanocrystals mats produced by electrospinning

Bellani, Caroline Faria; Pollet, Éric; Hébraud, Anne; Pereira, Fabiano Vargas; Schlatter, Guy; Avérous, Luc; Bretas, Rosário Elida Suman; Branciforti, Márcia Cristina

doi:10.1002/app.43445

Cited by 54 publications

(45 citation statements)

References 41 publications

(56 reference statements)

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“…The sulfate groups on the CNW surface remain as residue of approximately 18% in mass after TGA analysis under nitrogen atmosphere . All values are consistent with those reported in the literature …”

Section: Resultssupporting

confidence: 91%

“…The main challenge in this process consists in preserving the original morphology and maintaining the integrity of CNWs. Some authors demonstrated that when the nanoparticles are chemical grafting of polymer chains with the same nature as the matrix, better compatibilization and interfacial adhesion were achieved due to the formation of co‐continuous phase and of continuous interface. Furthermore, entanglements between grafted and ungrafted polymer chains take place if the molecular weight is high enough.…”

Section: Introductionmentioning

confidence: 99%

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Thermal properties and crystallinity of PCL/PBSA/cellulose nanocrystals grafted with PCL chains

Simão

Bellani

Branciforti

2016

J of Applied Polymer Sci

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Bionanocomposite films of poly(E-caprolactone) (PCL) and poly(butilene succinate-co-adipate) (PBSA) blends with cellulose nanocrystals (CNW) grafted with PCL chains (CNW-g-PCL) were prepared by solution casting and their thermal properties and crystallinity were studied. The CNW surface was modified with PCL chains by grafting "from" approaches, in an effort to improve their compatibility with the polymer blends. The grafting efficiency was evidenced by FTIR and TGA analysis. The acicular morphology of CNW-g-PCL was characterized by SEM. The TGA results showed an increase in the thermal stability of the CNW grafted with PCL chains. The PCL/PBSA blends showed higher thermal stability in comparison with the neat polymers and PCL/PBSA/CNW-g-PCL bionanocomposites. DSC results showed the CNW-g-PCL act as a nucleating agent in the bionanocomposites. Additionally, a better interaction of the CNW-g-PCL in the blends of 30/70 composition in comparison with the blends of 50/50 composition was characterized. The results obtained for aforementioned films prepared by solution casting encourage the production of such bionanocomposites by melt compounding (extrusion), aiming the achievement of new bionanocomposites materials with improved thermal and mechanical properties.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Thermal properties and crystallinity of PCL/PBSA/cellulose nanocrystals grafted with PCL chains

Simão

Bellani

Branciforti

2016

J of Applied Polymer Sci

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“…It was quite difficult to fix a unique amount of very disparate types of nanoparticles in order to compare the final properties of the nanocomposite electrospun fibers. Therefore, when we referred to the literature, in the case of CNC, we found that 1 wt% is a good amount to be dispersed into electrospun fibers [ 54 ]. Low amounts are also used for chitosan (i.e., 1 wt%) [ 17 ].…”

Section: Resultsmentioning

confidence: 99%

Organic and Inorganic PCL-Based Electrospun Fibers

et al. 2020

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In this work, different nanocomposite electrospun fiber mats were obtained based on poly(e-caprolactone) (PCL) and reinforced with both organic and inorganic nanoparticles. In particular, on one side, cellulose nanocrystals (CNC) were synthesized and functionalized by “grafting from” reaction, using their superficial OH– group to graft PCL chains. On the other side, commercial chitosan, graphene as organic, while silver, hydroxyapatite, and fumed silica nanoparticles were used as inorganic reinforcements. All the nanoparticles were added at 1 wt% with respect to the PCL polymeric matrix in order to compare the different behavior of the woven no-woven nanocomposite electrospun fibers with a fixed amount of both organic and inorganic nanoparticles. From the thermal point of view, no difference was found between the effect of the addition of organic or inorganic nanoparticles, with no significant variation in the Tg (glass transition temperature), Tm (melting temperature), and the degree of crystallinity, leading in all cases to high crystallinity electrospun mats. From the mechanical point of view, the highest values of Young modulus were obtained when graphene, CNC, and silver nanoparticles were added to the PCL electrospun fibers. Moreover, all the nanoparticles used, both organic and inorganic, increased the flexibility of the electrospun mats, increasing their elongation at break.

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“…Nonetheless, one of the main challenges when using cellulose as reinforcement in composites is associated with its hydrophilic nature and, hence, poor compatibility with hydrophobic polymer matrices frequently employed in composites preparation . The circumvention of this constraint involves mainly the surface modification of cellulose by covalent interactions . Nevertheless, Hatton et al recently reviewed the state‐of‐the‐art regarding the potential of physical adsorption of polymer chains to the surface of cellulose, particularly of nanocelluloses via electrostatic interactions as a detour to covalent grafting.…”

Section: Introductionmentioning

confidence: 99%

Exploiting poly(ɛ‐caprolactone) and cellulose nanofibrils modified with latex nanoparticles for the development of biodegradable nanocomposites

et al. 2018

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This study reports the development of nanocomposites based on poly(ɛ‐caprolactone) (PCL) and cellulose nanofibrils (CNF) modified with cationic latex nanoparticles. The physical adsorption of these water‐based latexes on the surface of CNF was studied as an environment‐friendly strategy to enhance the compatibility of CNF with a hydrophobic polymeric matrix. The latexes are composed of amphiphilic block copolymers based on cationic poly(N,N‐dimethylaminoethyl methacrylate‐co‐methacrylic acid) as the hydrophilic block, and either poly(methyl methacrylate) or poly(n‐butyl methacrylate) as the hydrophobic block. The simple and practical melt‐mixing of PCL‐ and latex‐modified CNF yielded white homogeneous nanocomposites with complete embedment of the nanofibrils in the thermoplastic matrix. All nanocomposites are semicrystalline materials with good mechanical properties (Young's modulus = 43.6–52.3 MPa) and thermal stability up to 335–340°C. Degradation tests clearly showed that the nanocomposites slowly degrade in the presence of lipase‐type enzyme. These PCL/CNF‐latex nanocomposite materials show great promise as future environmentally friendly packaging materials. POLYM. COMPOS., 40:1342–1353, 2019. © 2018 Society of Plastics Engineers

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Morphological, thermal, and mechanical properties of poly(ε‐caprolactone)/poly(ε‐caprolactone)‐grafted‐cellulose nanocrystals mats produced by electrospinning

Cited by 54 publications

References 41 publications

Thermal properties and crystallinity of PCL/PBSA/cellulose nanocrystals grafted with PCL chains

Thermal properties and crystallinity of PCL/PBSA/cellulose nanocrystals grafted with PCL chains

Organic and Inorganic PCL-Based Electrospun Fibers

Exploiting poly(ɛ‐caprolactone) and cellulose nanofibrils modified with latex nanoparticles for the development of biodegradable nanocomposites

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