Super toughening of the poly(l-lactide)/thermoplastic polyurethane blends by carbon nanotubes

Shi, Yanchao; Zhang, Wenbing; Yang, Jing‐hui; Huang, Ting; Zhang, Nan; Wang, Yong; Yuan, Guanming; Zhang, Chaoliang

doi:10.1039/c3ra43253j

Cited by 60 publications

(50 citation statements)

References 68 publications

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“…Rubber modified NCs based on PC [23][24][25][26][27], polyamide 6 [12,28], poly(l-lactide) [29][30][31] have been extensively studied in the literature. Non elastomeric polymers have been also used to modify PC based NCs [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

González¹,

Santamaría

Eguiazábal

2015

Composites Part A: Applied Science and Manufacturing

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Section: Introductionmentioning

confidence: 99%

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

González¹,

Santamaría

Eguiazábal

2015

Composites Part A: Applied Science and Manufacturing

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“…[11][12][13][14][15][16][17][18][19][20][21] To date, various exible polymers, such as natural rubber, 11 poly(ethyleneglycidyl methacrylate) (EGMA), 12 thermoplastic polyurethane (TPU), [13][14][15] poly(3-caprolactone) (PCL), [16][17][18] and polymerized soybean oil, 19,20 have been used for the toughening modication of PLLA. [11][12][13][14][15][16][17][18][19][20][21] To date, various exible polymers, such as natural rubber, 11 poly(ethyleneglycidyl methacrylate) (EGMA), 12 thermoplastic polyurethane (TPU), [13][14][15] poly(3-caprolactone) (PCL), [16][17][18] and polymerized soybean oil, 19,20 have been used for the toughening modication of PLLA.…”

Section: Introductionmentioning

confidence: 99%

Stereocomplex crystallites induce simultaneous enhancement in impact toughness and heat resistance of injection-molded polylactide/polyurethane blends

et al. 2016

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Despite its attractiveness as an "green" substitute for conventional petroleum-based polymers, the current application of plant-derived biodegradable poly(L-lactide) (PLLA) in many fields has been greatly limited by its inherent brittleness and poor heat resistance. Herein, taking thermoplastic polyurethane (TPU) toughened PLLA as an example, we report a facile and promising strategy for the fabrication of supertoughened and heat-resistant PLLA/elastomer blends by incorporating small amounts (e.g., 2.5 wt%) of poly(D-lactide) (PDLA) into the blends through melt-blending and subsequent injection molding. The incorporated PDLA chains can readily collaborate with neighboring PLLA matrix chains during the meltblending process to co-crystallize into stereocomplex (sc) crystallites in the PLLA matrix of the blend melts. Thus, these sc crystallites can behave as a highly efficient nucleating agent to significantly accelerate matrix crystallization, allowing for the preparation of PLLA blends with a highly crystallized PLLA matrix using practical injection molding. The highly crystallized matrix can provide the PLLA/TPU blends with dramatically improved impact toughness and heat resistance as compared with the amorphous one. Meanwhile, the role of these sc crystallites as a rheology modifier to induce the unexpected morphological change from the dispersed TPU phase from the sea-island structure to the unique network-like structure with a much higher toughening efficiency is also observed.

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“…These kinds of enhancements rely on good alignment and dispersion of the CNTs and excellent bonding of composite components (Sementsov et al 2010;Raja et al 2013a, b). Issues with bonding and alignment might be good for optimally improving the composites behavior which could possibly be detrimental to improving elastomeric mechanical properties (Singha and Thakur 2008a, b, c, d;Shi et al 2013). Generally, the applications of elastomeric need the significant deformation extensibility and resilience of the elastomer.…”

Section: Cnts: In Elastomer Polymeric Compositesmentioning

confidence: 97%

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

Julkapli

Sapuan

2015

Advanced Structured Materials

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Carbon nanotubes (CNTs) is a rigid rod-like nanoscale material produced from carbon in powder, liquid, or gel form via acid or chemical hydrolysis. Due to its unique and exceptional renewability, biodegradability, mechanical, physicochemical properties, and abundance, the incorporation associated with a small quantity of CNTs to polymeric matrices enhance the mechanical and thermal resistance, and also stability of the latter by several orders of magnitude. Moreover, NCC-derived carbon materials are of no serious threat to the environment, providing further impetus for the development and applications of this green and renewable biomaterial for lightweight and degradable composites. Surface functionalization of CNTs remains the focus of CNTs research in tailoring its properties for dispersion in hydrophilic and hydrophobic media. Through functionalization, the attachment of appropriate chemical functionalities between conjugated sp 2 of CNTs and polymeric matrix is established. It is thus of utmost importance that the tools and protocols for imaging CNTs in a complex matrix and quantify its reinforcement, antimicrobial, stability, hydrophilicity, and biodegradability are be developed.

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Super toughening of the poly(l-lactide)/thermoplastic polyurethane blends by carbon nanotubes

Cited by 60 publications

References 68 publications

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

Stereocomplex crystallites induce simultaneous enhancement in impact toughness and heat resistance of injection-molded polylactide/polyurethane blends

Multifunctionalized Carbon Nanotubes Polymer Composites: Properties and Applications

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