Grafting-from cellulose nanocrystals via photoinduced Cu-mediated reversible-deactivation radical polymerization

Hatton, Fiona L.; Kedzior, Stephanie A.; Cranston, Emily D.; Carlmark, Anna

doi:10.1016/j.carbpol.2016.10.064

Cited by 44 publications

(58 citation statements)

References 57 publications

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“…In the meantime, because of the relative high mass weight of Br atom, ash content of feather‐Br was lower than that of the original feather, which has a higher nitrogen content. These phenomena were also discovered and reported in the studies on the modification of other biomasses with BIBB …”

Section: Resultssupporting

confidence: 55%

“…To overcome the weaknesses of natural materials, surface graft modification has been proved a versatile and feasible method to change and enhance properties . Grafting different synthetic polymers onto the surface of biomaterials can ensure their hydrophobicity or hydrophilicity depending on applications. Furthermore, functional properties (e.g., stimuli‐responsivity and antibacterial properties) can also be achieved by applying a certain amount of monomers, increasing the possibility of these bioresources.…”

Section: Introductionmentioning

confidence: 99%

“…It is likely to utilize products directly without difficult separation, which is a great benefit for graft copolymerization. Surface initiated Cu(0)‐mediated RDRP has been used successfully on various inorganic and organic substrates . However, Cu(0)‐mediated RDRP also have limitations in monomer and solvent selection.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Graft modification of methyl acrylate onto chicken feather via surface initiated Cu(0)‐mediated reversible‐deactivation radical polymerization

Chen

Hori

Kajiyama

et al. 2019

J of Applied Polymer Sci

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In this study, chicken feather was functionalized with 2‐Bromoisobutyryl bromide (BIBB) where methyl acrylate (MA) was grafted through Cu(0)‐mediated reversible‐deactivation radical polymerization (RDRP) catalyzed by copper wire. Feather‐g‐PMAs with three different target degrees of polymerization (Dp) were prepared fast. Besides, molecular mass of PMA was closely associated with the theoretical value; PMA also exhibited relatively low polydispersity (~1.17). The catalyst was removed through simple washing, and thus a colorless product was yielded. However, Cu(0)‐mediated RDRP in the presence of the unmodified chicken feather caused the loss of control. Feather‐g‐PMA with a short graft chain exhibited a uniform interface coated on the feather fiber. Because the grafted PMA and the feather substrate had a strong interaction, and the graft ratio was less, there was only one stage of decomposition, and no glass transition temperature was detected. We detected a rough surface on feather‐g‐PMA with a longer graft chain and observed the glass transition of PMA and obviously two stages of decomposition. After densely graft, the hydrophilicity of chicken feather decreased. These feather‐g‐PMAs exhibited better compatibility in organic solvents (e.g., acetone and toluene). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48246.

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Graft modification of methyl acrylate onto chicken feather via surface initiated Cu(0)‐mediated reversible‐deactivation radical polymerization

Chen

Hori

Kajiyama

et al. 2019

J of Applied Polymer Sci

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“…The CNC- g -PBMA was used for the reinforcement of PCL matrix. Hatton and co-workers reported the photo-induced SI-ATRP of methyl acrylate on CNC functionalized with BiB [113]. The grafted polymers had a controlled molecular weight and narrow dispersity (≥1.1).…”

Section: Polymer Nanocomposites Reinforced By Cncmentioning

confidence: 99%

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

2018

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Abstract:In recent years, the research on nanocellulose composites with polymers has made significant contributions to the development of functional and sustainable materials. This review outlines the chemistry of the interaction between the nanocellulose and the polymer matrix, along with the extent of the reinforcement in their nanocomposites. In order to fabricate well-defined nanocomposites, the type of nanomaterial and the selection of the polymer matrix are always crucial from the viewpoint of polymer-filler compatibility for the desired reinforcement and specific application. In this review, recent articles on polymer/nanocellulose composites were taken into account to provide a clear understanding on how to use the surface functionalities of nanocellulose and to choose the polymer matrix in order to produce the nanocomposite. Here, we considered cellulose nanocrystal (CNC) and cellulose nanofiber (CNF) as the nanocellulosic materials. A brief discussion on their synthesis and properties was also incorporated. This review, overall, is a guide to help in designing polymer/nanocellulose composites through the utilization of nanocellulose properties and the selection of functional polymers, paving the way to specific polymer-filler interaction.

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“…In this situation, various approaches have been investigated to modify CNC and tune its surface chemistry. In some methods, CNCs are modified during the production step (Boujemaoui, Mongkhontreerat, Malmström, & Carlmark, 2015;Espino-Pérez, Domenek, Belgacem, Sillard, & Bras, 2014), while in other strategies the CNCs were produced first followed by the modifications, such as acetylation (Abraham et al, 2016;Lin, Huang, Chang, Feng, & Yu, 2011;Ramírez, Fortunati, Kenny, Torre, & Foresti, 2016) and polymer grafting (Eyley & Thielemans, 2011;Hatton, Kedzior, Cranston, & Carlmark, 2017;Huang et al, 2016;Morandi, Heath, & Thielemans, 2009). The main challenge with chemical functionalization to CNCs is to select an appropriate method, namely the surface modification that would not impact the distinctive properties of CNCs.…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of nanocellulose with canola oil fatty acid methyl ester

Wei

Agarwal

Hirth

et al. 2017

Carbohydrate Polymers

112

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Cellulose nanocrystals (CNCs), produced from dissolving wood pulp, were chemically functionalized by transesterification with canola oil fatty acid methyl ester (CME). CME performs as both the reaction reagent and solvent. Transesterified CNC (CNCFE) was characterized for their chemical structure, morphology, crystalline structure, thermal stability, and hydrophobicity. Analysis by Fourier transform infrared (FTIR) and FT-Raman spectroscopies showed that the long chain hydrocarbon structure was successfully grafted onto CNC surfaces. After transesterification the crystal size and crystallinity of nanocrystals were not changed as determined by Raman spectroscopy and wide angle X-ray diffraction (XRD). CNCFE showed higher thermal stability and smaller particle size than unmodified CNCs. Water contact angle measurement indicated the CNCFE surface has significantly higher hydrophobicity than unmodified CNCs. The transesterified CNCs could be potentially used as hydrophobic coatings and reinforcing agents to hydrophobic polymer for nanocomposites.

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Grafting-from cellulose nanocrystals via photoinduced Cu-mediated reversible-deactivation radical polymerization

Cited by 44 publications

References 57 publications

Graft modification of methyl acrylate onto chicken feather via surface initiated Cu(0)‐mediated reversible‐deactivation radical polymerization

Graft modification of methyl acrylate onto chicken feather via surface initiated Cu(0)‐mediated reversible‐deactivation radical polymerization

Recent Advances in Nanocellulose Composites with Polymers: A Guide for Choosing Partners and How to Incorporate Them

Chemical modification of nanocellulose with canola oil fatty acid methyl ester

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