Fabrication and characterization of polycaprolactone/calcium sulfate whisker composites

Liu, J. Y.; Reni, L.; Wei, Qiang; Wu, Junshu; Liu, S.; Wang, Y. J.; Li, G. Y.

doi:10.3144/expresspolymlett.2011.72

Cited by 79 publications

(48 citation statements)

References 32 publications

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“…A good dispersion and a strong interface between nanoparticles and polymer matrix are two main reasons for stress transfer and development of high mechanical performance polymer composites [9,10]. The investigation of literature shows that the mechanical properties of electrospun PCL nanofibers improve at the presence of different nanoparticles [7,8,11,12]. Among different nanoparticles, graphene and its derivatives could present a higher improvement in mechanical properties due to their higher surface area than other nanoparticles [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 96%

Aligned poly(ε-caprolactone)/graphene oxide and reduced graphene oxide nanocomposite nanofibers: Morphological, mechanical and structural properties

Ramazani

Karimi

2015

Materials Science and Engineering: C

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Section: Introductionmentioning

confidence: 96%

Aligned poly(ε-caprolactone)/graphene oxide and reduced graphene oxide nanocomposite nanofibers: Morphological, mechanical and structural properties

Ramazani

Karimi

2015

Materials Science and Engineering: C

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“…[1][2][3][4], showing excellent thermal stability and mechanical strength [5][6][7]. Calcium sulfate whiskers can be produced by preparing α-CaSO 4 ·0.5H 2 O whiskers through hydrothermal, acidification, reverse micro-emulsion, and microwave-assisted approaches [8][9][10][11][12][13] followed by calcination of the α-CaSO 4 ·0.5H 2 O whiskers above 600 • C [14,15].…”

Section: Introductionmentioning

confidence: 99%

Influence of Alkyl Trimethyl Ammonium Bromides on Hydrothermal Formation of α-CaSO4·0.5H2O Whiskers with High Aspect Ratios

et al. 2017

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Abstract:In this paper, the influence of alkyl trimethyl ammonium bromides (C n H 2n+1 (CH 3 ) 3 NBr, n = 10, 12, 14, 16, 18, abbreviated as ATAB) on the formation of alpha calcium sulfate hemihydrate (α-CaSO 4 ·0.5H 2 O) whiskers under a hydrothermal condition (135 • C, 3.0 h) was analyzed. Specifically, it focuses on cetyl trimethyl ammonium bromide (C 16 H 33 (CH 3 ) 3 NBr, abbreviated as CTAB). The rising CTAB concentration from 0 to 9.2 × 10 −4 mol·L −1 led to the increase of the average aspect ratio of α-CaSO 4 ·0.5H 2 O whiskers from 80 to 430, since the selective adsorption of CTAB on the negatively-charged side facets of the whiskers inhibited the growth of the whiskers along the direction normal to the lateral facets. The further increase of CTAB concentration above the critical micelle concentration (abbreviated as CMC) showed little effect on the morphology of α-CaSO 4 ·0.5H 2 O whiskers, considering that CTAB tended to form micelles instead of being adsorbed on the whisker surfaces. Similar phenomena were observed in other ATABs (n = 10, 12, 14, 18).

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“…Reports in the literature indicate that impact resistance often decreases as an effect of wood reinforcement [38][39][40][41][42][43][44] similarly to many particulate filled composites [45][46][47][48][49][50][51].…”

Section: Fracture Toughnessmentioning

confidence: 99%

Tensile and impact properties of three-component PP/wood/elastomer composites

Keledi

Sudár

Burgstaller³

et al. 2012

Express Polym. Lett.

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Polypropylene (PP) was reinforced with wood flour and impact modified with elastomers to increase stiffness and impact resistance simultaneously. Elastomer content changed in four (0, 5, 10 and 20 wt%), while that of wood content in seven steps, the latter from 0 to 60 wt% in 10 wt% steps. Structure and adhesion were controlled by the addition of functionalized (maleated) polymers. Composites were homogenized in a twin-screw extruder and then injection molded to tensile bars. Fracture resistance was characterized by standard and instrumented impact tests. The results showed that the components are dispersed independently of each other even when a functionalized elastomer is used for impact modification, at least under the conditions of this study. Impact resistance does not change much as a function of wood content in PP/wood composites, but decreases drastically from the very high level of the PP/elastomer blend to almost the same value obtained without impact modifier in the three-component materials. Increasing stiffness and fiber related local deformation processes led to small fracture toughness at large wood content. Micromechanical deformation processes depend mainly on the strength of PP/wood interaction; debonding and pull-out take place at poor adhesion, while fiber fracture dominates when adhesion is strong. Composites with sufficiently large impact resistance cannot be prepared in the usual range of wood contents (50–60 wt%)

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Fabrication and characterization of polycaprolactone/calcium sulfate whisker composites

Cited by 79 publications

References 32 publications

Aligned poly(ε-caprolactone)/graphene oxide and reduced graphene oxide nanocomposite nanofibers: Morphological, mechanical and structural properties

Aligned poly(ε-caprolactone)/graphene oxide and reduced graphene oxide nanocomposite nanofibers: Morphological, mechanical and structural properties

Influence of Alkyl Trimethyl Ammonium Bromides on Hydrothermal Formation of α-CaSO4·0.5H2O Whiskers with High Aspect Ratios

Tensile and impact properties of three-component PP/wood/elastomer composites

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