Chemical modification routes of synthetic talc: Influence on its nucleating power and on its dispersion state
Source abstract
Abstract
New synthetic talcs were incorporated into a polyolefin matrix to prepare synthetic talc polypropylene (PP) nanocomposites via melt mixing. Different routes of physicochemical modifications of short range (cation exchange or silane grafting) or long range (compatibilizer) order were carried out to achieve an optimized dispersion state. A statistical TEM image analysis methodology was developed to evaluate more quantitatively the dispersion state of the talc particles within the PP matrix. Natural talc was taken as a reference in order to compare its nucleating power and its dispersion capacity with that of the synthetic talcs in the same grade of PP. Even though natural talc acts as the most efficient nucleating agent, the organophilic surface treatment enhances significantly the nucleating effect of the synthetic talcs. By coupling the incorporation of a compatibilizer with a suitable organophilic surface treatment, the synthetic talcs can be also better dispersed than their natural counterpart, giving rise to the formation of a heat shield that delays the thermal degradation of the filled matrix.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer Nanocomposites and Properties · biodegradable polymer synthesis and properties · Natural Fiber Reinforced Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (57)
Show source-provided references
1. The effect of dry grinding on the structure of talc10.1016/0169-1317(94)90033-7 ↗
2. Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials10.1016/S0927-796X(00)00012-7 ↗
3. Bergaya · 2013 · vol. 5A
4. Polymer-layered silicate nanocomposites from model surfactants10.1021/cm011639k ↗
5. Crystallization and orientation studies in polypropylene/single wall carbon nanotube composite10.1016/S0032-3861(03)00073-9 ↗
6. Processing of polypropylene–clay hybrids
7. Brigatti · 2013 · vol. 5A
8. Functionalization of synthetic talc like phyllosilicates by alkoxyorganosilane grafting10.1039/c0jm01276a ↗
9. Nanocomposites of polyurethane with various organoclays: thermomechanical properties, morphology, and gas permeability10.1002/polb.10124 ↗
10. Poly(lactic acid) nanocomposites with various organoclays. I. Thermomechanical properties, morphology, and gas permeability10.1002/polb.10349 ↗
11. Synthesis of lamellar isobutyl silicates and dispersion in polypropylene melts10.1002/app.26315 ↗
12. Thermal stability of polypropylene/carbon nanofiber composite10.1002/app.22864 ↗
13. Polypropylene/talc/SEBS (SEBS-g-MA) composites. Part 1. Structure10.1016/j.compositesa.2005.01.022 ↗
14. Effect of melt processing conditions on the extent of exfoliation in organoclay-based nanocomposites10.1016/S0032-3861(01)00473-6 ↗
15. Detellier · 2013 · vol. 5A
16. Grafting of alkylchlorosilanes onto silica from solution for adhesion enhancement10.1163/156856100742834 ↗
17. Synthetic talc advances: coming closer to nature, added value and industrial requirements10.1016/j.clay.2013.09.006 ↗
18. Talc as nucleating agent of polypropylene: morphology induced by lamellar particles addition and interface mineral-matrix modelization10.1023/A:1014929121367 ↗
19. Self-nucleation and recrystallization of isotactic polypropylene (alpha-phase) investigated by differential scanning calorimetry10.1002/polb.1993.090311013 ↗
20. Self-nucleation and enhanced nucleation of polymers – definition of a convenient calorimetric efficiency scale and evaluation of nucleating additives in isotactic polypropylene (alpha-phase)10.1002/polb.1993.090311014 ↗
21. Controlled Shear-Induced Molecular Orientation and Crystallization in Polypropylene/Talc Microcomposites - Effects of the talc nature10.1016/j.polymer.2013.03.057 ↗
22. Grafting of swelling clay materials with aminopropyltriethoxysilane10.1016/j.jcis.2005.02.092 ↗
23. Influence of processing conditions and physicochemical interactions on morphology and fracture behavior of a clay/thermoplastic/thermosetting ternary blend10.1002/app.32405 ↗
24. Dynamic rheology, mechanical performance, shrinkage, and morphology of chemically coupled talc-filled polypropylene10.1002/vnl.20209 ↗
25. Characteristics of nitrile-butadiene rubber layered silicate nanocomposites with silane coupling agent10.1002/app.12169 ↗
26. Structure and properties of polypropylene-based nanocomposites: effect of PP-g-MA to organoclay ratio10.1016/j.polymer.2007.07.011 ↗
27. Lambert · 2013 · vol. 5A
28. Mechanism of clay tactoid exfoliation in epoxy–clay nanocomposites10.1021/cm00059a023 ↗
29. Effect of the talc filler content on the mechanical properties of polypropylene composites10.1002/app.28797 ↗
30. Surface modifications of montmorillonite for tailored interfaces in nanocomposites10.1080/00218460213738 ↗
31. Lebre · 2007
32. Comparison of the mechanical properties and interfacial interactions between talc, kaolin, and calcium carbonate filled polypropylene composites10.1002/app.13542 ↗
33. Tailoring of interfacial properties by ionic liquids in a fluorinated matrix based nanocomposites10.1016/j.eurpolymj.2011.03.011 ↗
34. New polylactide/layered silicate nanocomposites: role of organoclays10.1021/cm020391b ↗
35. Highly efficient nucleating additive for isotactic polypropylene studied by differential scanning calorimetry10.1002/app.10546 ↗
36. Martin · 2008
37. The lower cation exchange capacity limit of montmorillonite10.1006/jcis.1999.6254 ↗
38. Impact of synthetic talc on PLLA electrospun fibers10.1016/j.eurpolymj.2013.05.017 ↗
39. The effect of talc on the crystallization of isotactic polypropylene10.1002/1097-4628(20010228)79:9<1693::AID-APP190>3.0.CO;2-P ↗
40. Estimation of surface free energy of polymers10.1002/app.1969.070130815 ↗
41. Nanocomposite fire retardants — A review10.1002/(SICI)1099-1018(200001/02)24:1<45::AID-FAM719>3.0.CO;2-S ↗
42. Comparison of the mechanical properties of rice husk powder filled polypropylene composites with talc filled polypropylene composites10.1016/S0142-9418(02)00018-1 ↗
43. Maleated and non-maleated polyethylene–montmorillonite layered silicate blown films: creep, dispersion and crystallinity10.1016/j.polymer.2005.04.085 ↗
44. Some features associated with organosilane groups grafted by the sol–gel process onto synthetic talc-like phyllosilicate10.1016/j.jcis.2005.10.019 ↗
45. Talc from Puebla de Lillo, Spain. II. Effect of dry grinding on particle size and shape10.1016/S0169-1317(97)00013-6 ↗
46. Structure development and crystallization behaviour of PP/nanoparticulate composite10.1016/S0032-3861(01)00140-9 ↗
47. Van Es · 2001
48. Evaluation of the structure and dispersion in polymer-layered silicate nanocomposites10.1021/ma051249+ ↗
49. Effects of titanate coupling agent on rheological behaviour, dispersion characteristics and mechanical properties of talc filled polypropylene10.1016/S0014-3057(99)00123-8 ↗
50. Wunderlich · 1976 · 44
51. Preparation of porous material from talc by mechanochemical treatment and subsequent leaching10.1016/j.clay.2005.10.015 ↗
52. Use of new synthetic talc as reinforcing nanofillers for polypropylene and polyamide 6 systems: thermal and mechanical properties10.1016/j.jcis.2013.04.019 ↗
53. Thermal degradation behaviour of PE/clay nanocomposites10.1016/j.polymdegradstab.2004.03.005 ↗
54. Experimental study on thermal and mechanical behavior of polypropylene, talc/polypropylene and polypropylene/clay nanocomposites10.1016/j.msea.2005.04.014 ↗
55. Intercalated structure of polypropylene/in situ polymerization-modified talc composites via melt compounding10.1016/j.polymer.2007.04.033 ↗
56. Isothermal crystallization kinetics of polypropylene with silane functionalized multi-walled carbon nanotubes10.1002/polb.21128 ↗
57. Fire properties of polystyrene-clay nanocomposites10.1021/cm000984r ↗