Nanocomposites of LLDPE and Surface-Modified Cellulose Nanocrystals Prepared by Melt Processing
Abstract
:1. Introduction
2. Results and Discussion
2.1. Modification of CNCs
2.2. Nanocomposites of LLDPE and CNC
3. Materials and Methods
3.1. Materials and Procedures
3.1.1. Materials
3.1.2. CNC Isolation
3.1.3. CNC Modification with Anhydrides
3.1.4. Preparation of Powder Mixtures of CNCs and LLDPE
3.1.5. Melt Processing of CNC/LLDPE Mixtures
3.2. Characterization
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample Availability: Samples of the compounds are not available from the authors. |
Sample Designation | Surface Modification | CNC Fraction | Young’s Modulus | Tensile Strength | Strain at Break | Tm | ΔHm |
---|---|---|---|---|---|---|---|
wt % | MPa | MPa | % | °C | J g−1 | ||
NComp-2 | - | 2% | 0.45 ± 0.02 | 19.1 ± 0.22 | 59.6 ± 9.3 | 129.3 | 135.4 |
NComp-3 | - | 5% | 0.51 ± 0.08 | 21.5 ± 0.27 | 54.9 ± 8.9 | 128.7 | 132.2 |
NComp-4 | AcAnh | 1% | 0.45 ± 0.04 | 20.7 ± 0.12 | 35.1 ± 5.8 | 129.5 | 122.5 |
NComp-5 | AcAnh | 2% | 0.43 ± 0.03 | 20.9 ± 0.27 | 37.3 ± 4.0 | 128.5 | 121.8 |
NComp-6 | AcAnh | 5% | 0.51 ± 0.08 | 21.3 ± 0.41 | 33.7 ± 6.1 | 129.4 | 121.2 |
Sample Designation | Surface Modification | Molding Temp. | Young’s Modulus | Tensile Strength | Strain at Break | Tm | ΔHm |
---|---|---|---|---|---|---|---|
°C | MPa | MPa | % | °C | J g−1 | ||
NComp-7 | - | 100 | 0.53 ± 0.06 | 20.2 ± 0.21 | 59.9 ± 7.8 | 128.4 | 136.2 |
NComp-8 | - | 110 | 0.56 ± 0.03 | 20.6 ± 0.48 | 65.1 ± 7.3 | 128.6 | 136.4 |
NComp-9 | - | 120 | 0.62 ± 0.03 | 21.3 ± 0.01 | 57.7 ± 8.8 | 131.0 | 134.9 |
NComp-10 | AcAnh | 100 | 0.44 ± 0.09 | 19.2 ± 0.48 | 75.3 ± 9.5 | 128.5 | 134.4 |
NComp-11 | AcAnh | 110 | 0.59 ± 0.02 | 20.8 ± 0.36 | 50.2 ± 6.2 | 128.7 | 135.4 |
NComp-12 | AcAnh | 120 | 0.63 ± 0.04 | 20.9 ± 0.77 | 50.6 ± 8.9 | 130.2 | 134.0 |
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Anžlovar, A.; Kunaver, M.; Krajnc, A.; Žagar, E. Nanocomposites of LLDPE and Surface-Modified Cellulose Nanocrystals Prepared by Melt Processing. Molecules 2018, 23, 1782. https://doi.org/10.3390/molecules23071782
Anžlovar A, Kunaver M, Krajnc A, Žagar E. Nanocomposites of LLDPE and Surface-Modified Cellulose Nanocrystals Prepared by Melt Processing. Molecules. 2018; 23(7):1782. https://doi.org/10.3390/molecules23071782
Chicago/Turabian StyleAnžlovar, Alojz, Matjaž Kunaver, Andraž Krajnc, and Ema Žagar. 2018. "Nanocomposites of LLDPE and Surface-Modified Cellulose Nanocrystals Prepared by Melt Processing" Molecules 23, no. 7: 1782. https://doi.org/10.3390/molecules23071782