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Morphology and Properties of Polyolefin Elastomer/Polyamide 6/Poly(lactic Acid) In Situ Special-Shaped Microfibrillar Composites: Influence of Viscosity Ratio.
| Content Provider | Europe PMC |
|---|---|
| Author | Shi, Min Wang, Lijun Sun, Jing Yang, Wensheng Zhang, Hui |
| Editor | Espinach Orús, Francisco Javier |
| Copyright Year | 2022 |
| Abstract | In Situ microfibrillation is an easy and economical processing method, which has drawn wide concern in recent years. In Situ special-shaped microfibrillar composites, which with poly(lactic acid)/polyamide 6 (PA6/PLA) together formed special-shaped microfibrils in polyolefin elastomer (POE) matrix, were successfully prepared by using multistage stretching extrusion technology. Four types of PA6 with different viscosity were utilized to investigate the effect of viscosity ratio of PA6 to PLA on the structure evolution of special-shaped microfibrils and the mechanical properties of POE/(PA6/PLA) composites. The morphological observation showed that the viscosity ratio was closely associated to the size and shape of PA6 and greatly affected the microfibrillar morphology of PLA/PA6. When the viscosity ratio of PA6 to PLA was less than 2.2, the “gourd-skewers-like” structure microfibrils were obtained. When the viscosity ratio of PA6/PLA to 14.2 was further increased, the “trepang” structure microfibrils were dominant. The “gourd skewers” structure microfibrils were favorable to improvement the tensile strength, Young’s modulus, and viscoelastic properties of POE/(PA6/PLA) blends compared to the “trepang” structure microfibrils. In addition, the morphology of microfibrils exhibited a negligible effect on the melting and crystallization temperature and crystallization degree of PLA and POE matrix. This work provides a new strategy for designing the in situ special-shaped microfibrillar composites with improved mechanical properties. |
| Journal | Polymers |
| Volume Number | 14 |
| PubMed Central reference number | PMC9658227 |
| Issue Number | 21 |
| PubMed reference number | 36365550 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14214556 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-10-27 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors. |
| Subject Keyword | in situ microfibrillar composites polyolefin elastomer poly(lactic acid)/polyamide 6 special-shaped microfibrils viscosity ratio |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Polymers and Plastics |
