Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold
Graphene oxide (GO) and molybdenum disulphide (MoS2), have drawn more and more attention as reinforcement in polymer. However, their large specific surface area and strong van der Waals forces result in serious aggregations in polymer matrix, which restrains the reinforcement effect. In this study,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-01-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2022.2115384 |
| _version_ | 1797678635089395712 |
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| author | Pei Feng Saipu Shen Liuyimei Yang Ye Kong Sheng Yang Cijun Shuai |
| author_facet | Pei Feng Saipu Shen Liuyimei Yang Ye Kong Sheng Yang Cijun Shuai |
| author_sort | Pei Feng |
| collection | DOAJ |
| description | Graphene oxide (GO) and molybdenum disulphide (MoS2), have drawn more and more attention as reinforcement in polymer. However, their large specific surface area and strong van der Waals forces result in serious aggregations in polymer matrix, which restrains the reinforcement effect. In this study, MoS2 nanosheets were in situ synthesised vertically and uniformly on the surface of GO nanosheets with the help of a hexadecyl trimethyl ammonium bromide (CTAB) assisted hydrothermal process to facilitate their dispersion in polylactic acid (PLLA) scaffold manufactured via selective laser sintering (SLS). The experimental results revealed that the 1.5 wt% GO/MoS2 nanocomposite exhibited better dispersion state compared with the 1.5 wt% GO and 1.5 wt% MoS2 in PLLA matrix. Therefore, the PLLA scaffold loading 1.5 wt% GO/MoS2 presented 10.2 and 1461 MPa of tensile strength and modulus with enhancement of 61% and 58%, respectively, compared with the pure PLLA scaffold. The reinforcement mechanisms mainly included crack deflection, crack bridging, crack pinning and pulling out of GO/MoS2. What’s more, the GO/MoS2-PLLA scaffold possessed benign cytocompatibility for cell behaviour, suggesting hopeful applications in bone defect repair. |
| first_indexed | 2024-03-11T23:02:47Z |
| format | Article |
| id | doaj.art-95b5418da7974ea1aa54a09edac026db |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:02:47Z |
| publishDate | 2023-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-95b5418da7974ea1aa54a09edac026db2023-09-21T14:38:03ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672023-01-0118110.1080/17452759.2022.21153842115384Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffoldPei Feng0Saipu Shen1Liuyimei Yang2Ye Kong3Sheng Yang4Cijun Shuai5Central South UniversityCentral South UniversityGanjiang Innovation AcademyCentral South UniversityThe Third Affiliated Hospital of Shenzhen UniversityCentral South UniversityGraphene oxide (GO) and molybdenum disulphide (MoS2), have drawn more and more attention as reinforcement in polymer. However, their large specific surface area and strong van der Waals forces result in serious aggregations in polymer matrix, which restrains the reinforcement effect. In this study, MoS2 nanosheets were in situ synthesised vertically and uniformly on the surface of GO nanosheets with the help of a hexadecyl trimethyl ammonium bromide (CTAB) assisted hydrothermal process to facilitate their dispersion in polylactic acid (PLLA) scaffold manufactured via selective laser sintering (SLS). The experimental results revealed that the 1.5 wt% GO/MoS2 nanocomposite exhibited better dispersion state compared with the 1.5 wt% GO and 1.5 wt% MoS2 in PLLA matrix. Therefore, the PLLA scaffold loading 1.5 wt% GO/MoS2 presented 10.2 and 1461 MPa of tensile strength and modulus with enhancement of 61% and 58%, respectively, compared with the pure PLLA scaffold. The reinforcement mechanisms mainly included crack deflection, crack bridging, crack pinning and pulling out of GO/MoS2. What’s more, the GO/MoS2-PLLA scaffold possessed benign cytocompatibility for cell behaviour, suggesting hopeful applications in bone defect repair.http://dx.doi.org/10.1080/17452759.2022.2115384graphene oxidemolybdenum disulphidescaffoldin situ growthmechanical reinforcement |
| spellingShingle | Pei Feng Saipu Shen Liuyimei Yang Ye Kong Sheng Yang Cijun Shuai Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold Virtual and Physical Prototyping graphene oxide molybdenum disulphide scaffold in situ growth mechanical reinforcement |
| title | Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold |
| title_full | Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold |
| title_fullStr | Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold |
| title_full_unstemmed | Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold |
| title_short | Vertical and uniform growth of MoS2 nanosheets on GO nanosheets for efficient mechanical reinforcement in polymer scaffold |
| title_sort | vertical and uniform growth of mos2 nanosheets on go nanosheets for efficient mechanical reinforcement in polymer scaffold |
| topic | graphene oxide molybdenum disulphide scaffold in situ growth mechanical reinforcement |
| url | http://dx.doi.org/10.1080/17452759.2022.2115384 |
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