Irradiation of poly(l-lactide) biopolymer reinforced with functionalized MWCNTs

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 55544-55549 ◽  
Author(s):  
Ali Nabipour Chakoli ◽  
Jinmei He ◽  
Maryam Amirian Chayjan ◽  
Yudong Huang ◽  
Baode Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Melting Point ◽  
Irradiation Effect ◽  
Mechanical And Thermal Properties ◽  
Functionalized Carbon Nanotubes ◽  
Functionalized Mwcnts

The γirradiation increases the modulus and strength, decreases the melting point of poly(l-lactide) during sterilization. The functionalized carbon nanotubes accelerate the irradiation effect on mechanical and thermal properties of poly(l-lactide).

Mechanical and thermal properties of polyoxymethylene-matrix composites filled with multi-walled carbon nanotubes-coated milled glass fiber

2019 ◽  
Vol 54 (15) ◽  
pp. 1961-1976
Author(s):  
Xu Xiangmin ◽  
Hongxiang Zhang ◽  
Tong Beibei ◽  
Li Binjie ◽  
Yudong Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Thermal Properties ◽  
Electron Microscope ◽  
Glass Fiber ◽  
Crystallization Temperature ◽  
High Performance ◽  
Multiwall Carbon Nanotubes ◽  
Fiber Surface ◽  
Mechanical And Thermal Properties

The advanced multifunctional filler has become one of the main challenges in developing high-performance polymer composites. In this study, the acid-treated multiwall carbon nanotubes (MWCNTs) were adhered to the surface of milled glass fiber under the combined effect of 3-aminopropyltriethyloxy silane and tetraethyl orthosilicate to fabricate a hierarchical fiber (MWCNTs-MGF). The morphologies of the hierarchical fibers were characterized using field-emission scanning electron microscope and transmission electron microscope, which showed evidence of a coating layer of MWCNTs on each fiber surface. The MWCNTs-MGF was employed as a multifunctional filler to prepare polyoxymethylene-based composites using a twin-screw extruder by melt blending. The obtained composites exhibited improved mechanical and thermal properties. The composite tensile strength and notched impact strength and Young's modulus increased by 10%, 32%, and 32%, respectively, as the MWCNTs-MGF content varies from 0 to 10 wt.%. Meanwhile, the reinforcing and toughing mechanisms of MWCNTs-MGF were also elaborated by analyzing the interfacial adhesion and fracture morphologies of the composites. Moreover, the study on thermal stability and crystallization behavior indicated that the polyoxymethylene/MWCNTs-MGF composites had higher thermal stability, crystallization temperature, and crystallinity as compared to the polymer matrix. The improvement of thermal stability originates from the unique surface structure of MWCNTs-MGF, while the increase in crystallization temperature and crystallinity is due to the strong heterogeneous nucleation ability of the hierarchical fibers.

In-situ probing the electrical, mechanical, and thermal properties of individual carbon nanotubes and nanowires by using a TEM-SPM platform

2008 ◽  
Vol 14 (S2) ◽  
pp. 398-399
Author(s):  
J-Y Huang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
New Mexico ◽  
Mechanical And Thermal Properties

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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