doi:10.1007/s11705-016-1577-z

Frontiers of Chemical Science and Engineering

2016, Vol. 10

Issue (3): 396-404 https://doi.org/10.1007/s11705-016-1577-z

本期目录

Polydimethylsiloxane assisted supercritical CO₂ foaming behavior of high melt strength polypropylene grafted with styrene

Weixia Wang¹,Shuai Zhou¹,Zhong Xin^1,^2,^*(

),Yaoqi Shi^1,³,Shicheng Zhao¹

¹. Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
². State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
³. Shanghai Key Laboratory of Catalysis Technology for Polyolefin, Shanghai Research Institute of Chemical Industry, Shanghai 200062, China

全文: PDF(465 KB) HTML

文章导读

摘要:

关键词 ：

Abstract：

Foamable high melt strength polypropylene (HMSPP) was prepared by grafting styrene (St) onto polypropylene (PP) and simultaneously introducing polydimethylsiloxane (PDMS) through?a?one-step?melt extrusion process. The effect of PDMS viscosity on the foaming behavior of HMSPP was systematically investigated using supercritical CO₂ as the foaming agent. The results show that the addition of PDMS has little effect on the grafting reaction of St and HMSPP exhibits enhanced elastic response and obvious strain hardening effect. Though the CO₂ solubility of HMSPP with PDMS (PDMS-HMSPP) is lower than that of HMSPP without PDMS, especially for PDMS with low viscosity, the PDMS-HMSPP foams exhibit narrow cell size distribution and high cell density. The fracture morphology of PDMS-HMSPP shows that PDMS with low viscosity disperses more easily and uniformly in HMSPP matrix, leading to form small domains during the extrusion process. These small domains act as bubble nucleation sites and thus may be responsible for the improved foaming performance of HMSPP.

Key words： high melt strength polypropylene (HMSPP) polydimethylsiloxane (PDMS) supercritical CO₂ foaming behavior

收稿日期: 2016-01-26 出版日期: 2016-08-23

PACS:

基金资助:

Corresponding Author(s): Zhong Xin

引用本文:

. [J]. Frontiers of Chemical Science and Engineering, 2016, 10(3): 396-404.
Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao. Polydimethylsiloxane assisted supercritical CO₂ foaming behavior of high melt strength polypropylene grafted with styrene. Front. Chem. Sci. Eng., 2016, 10(3): 396-404.

链接本文:

https://academic.hep.com.cn/fcse/CN/10.1007/s11705-016-1577-z
https://academic.hep.com.cn/fcse/CN/Y2016/V10/I3/396

Tab.1

Fig.1

Tab.2

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Tab.3

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

1	Oh K, Seo Y, Hong S, Takahara A, Lee K, Seo Y. Dispersion and reaggregation of nanoparticles in the polypropylene copolymer foamed by supercritical carbon dioxide. Physical Chemistry Chemical Physics, 2013, 15(26): 11061–11069 https://doi.org/10.1039/c3cp51068a
2	Lan X, Zhai W, Zheng W. Critical effects of polyethylene addition on the autoclave foaming behavior of polypropylene and the melting behavior of polypropylene foams blown with n-pentane and CO2. Industrial & Engineering Chemistry Research, 2013, 52(16): 5655–5665 https://doi.org/10.1021/ie302899m
3	Ding J, Ma W, Song F, Zhong Q. Effect of nano-calcium carbonate on microcellular foaming of polypropylene. Journal of Materials Science, 2013, 48(6): 2504–2511 https://doi.org/10.1007/s10853-012-7039-1
4	Naguib H, Park C, Reichelt N. Fundamental foaming mechanisms governing the volume expansion of extruded polypropylene foams. Journal of Applied Polymer Science, 2004, 91(4): 2661–2668 https://doi.org/10.1002/app.13448
5	Wang K, Wu F, Zhai W, Zheng W. Effect of polytetrafluoroethylene on the foaming behaviors of linear polypropylene in continuous extrusion. Journal of Applied Polymer Science, 2013, 129(4): 2253–2260 https://doi.org/10.1002/app.38959
6	Chaudhary A, Jayaraman K. Extrusion of linear polypropylene-clay nanocomposite foams. Polymer Engineering and Science, 2011, 51(9): 1749–1756 https://doi.org/10.1002/pen.21961
7	Li Y, Yao Z, Chen Z, Qiu S, Zeng C, Cao K. High melt strength polypropylene by ionic modification: Preparation, rheological properties and foaming behaviors. Polymer, 2015, 70: 207–214 https://doi.org/10.1016/j.polymer.2015.06.032
8	Li S, Xiao M, Guan Y, Wei D, Xiao H, Zheng A. A novel strategy for the preparation of long chain branching polypropylene and the investigation on foamability and rheology. European Polymer Journal, 2012, 48(2): 362–371 https://doi.org/10.1016/j.eurpolymj.2011.11.015
9	Zhang Z, Wan D, Xing H, Tan H, Wang L, Zheng J, An Y, Tang T. A new grafting monomer for synthesizing long chain branched polypropylene through melt radical reaction. Polymer, 2012, 53(1): 121–129 https://doi.org/10.1016/j.polymer.2011.11.033
10	Zhou S, Zhao S, Xin Z. Preparation and foamability of high melt strength polypropylene based on grafting vinyl polydimethylsiloxane and styrene. Polymer Engineering and Science, 2015, 55(2): 251–259 https://doi.org/10.1002/pen.23889
11	Antunes M, Realinho V, Velasco J. Foaming behaviour, structure, and properties of polypropylene nanocomposites foams. Journal of Nanomaterials, 2010, 2010(4): 1–11 https://doi.org/10.1155/2010/306384
12	Bhattacharya S, Gupta R, Jollands M, Bhattacharya S. Foaming behavior of high-melt strength polypropylene/clay nanocomposites. Polymer Engineering and Science, 2009, 49(10): 2070–2084 https://doi.org/10.1002/pen.21343
13	Wang M, Ma J, Chu R, Park C, Nanqiao Z. Effect of the introduction of polydimethylsiloxane on the foaming behavior of block-copolymerized polypropylene. Journal of Applied Polymer Science, 2012, 123(5): 2726–2732 https://doi.org/10.1002/app.34854
14	Bing L, Wu Q, Zhou N, Shi B. Batch foam processing of polypropylene/polydimethylsiloxane blends. International Journal of Polymeric Materials, 2010, 60(1): 51–61 https://doi.org/10.1080/00914037.2010.504157
15	Spitael P, Macosko C, McClurg R. Block copolymer micelles for nucleation of microcellular thermoplastic foams. Macromolecules, 2004, 37(18): 6874–6882 https://doi.org/10.1021/ma049712q
16	Prakashan K, Gupta A, Maiti S. Effect of compatibilizer on micromehanical deformations and morphology of dispersion in PP/PDMS blend. Journal of Applied Polymer Science, 2007, 105(5): 2858–2867 https://doi.org/10.1002/app.26510
17	Wu Q, Park C, Zhou N, Zhu W. Effect of temperature on foaming behaviors of homo-and co-polymer polypropylene/polydimethylsiloxane blends with CO2. Journal of Cellular Plastics, 2009, 45(4): 303–319 https://doi.org/10.1177/0021955X09102399
18	Wang W, Zhou S, Xin Z, Shi Y, Zhao S, Meng X. Preparation and foaming mechanism of foamable polypropylene based on self-assembled nanofibrils from sorbitol nucleating agents. Journal of Materials Science, 2016, 51(2): 788–796 https://doi.org/10.1007/s10853-015-9402-5
19	Chen J, Liu T, Zhao L, Yuan W. Determination of CO2 solubility in isotactic polypropylene melts with different polydispersities using magnetic suspension balance combined with swelling correction. Thermochimica Acta, 2012, 530: 79–86 https://doi.org/10.1016/j.tca.2011.12.006
20	Kumar V, Suh N. A process for making microcellular thermoplastic parts. Polymer Engineering and Science, 1990, 30(20): 1323–1329 https://doi.org/10.1002/pen.760302010
21	Deng Q, Fu Z, Sun F, Xu J, Fan Z. Structure and rheological properties of the products of solid-state graft polymerization of styrene in annealed polypropylene reactor granules. Polymer-Plastics Technology and Engineering, 2009, 48(5): 516–524 https://doi.org/10.1080/03602550902824317
22	Lagendijk R, Hogt A, Buijtenhuijs A, Gotsis A. Peroxydicarbonate modification of polypropylene and extensional flow properties. Polymer, 2001, 42(25): 10035–10043 https://doi.org/10.1016/S0032-3861(01)00553-5
23	Tian J, Yu W, Zhou C. The preparation and rheology characterization of long chain branching polypropylene. Polymer, 2006, 47(23): 7962–7969 https://doi.org/10.1016/j.polymer.2006.09.042
24	Wood-Adams P, Dealy J, Degroot A, Redwine O. Effect of molecular structure on the linear viscoelastic behavior of polyethylene. Macromolecules, 2000, 33(20): 7489–7499 https://doi.org/10.1021/ma991533z
25	Xu Z, Zhang Z, Guan Y, Wei D, Zheng A. Investigation of extensional rheological behaviors of polypropylene for foaming. Journal of Cellular Plastics, 2013, 49(4): 317–334 https://doi.org/10.1177/0021955X13477431
26	Auhl D, Stadler F, Muenstedt H. Comparison of molecular structure and rheological properties of electron-beam- and gamma-irradiated polypropylene. Macromolecules, 2012, 45(4): 2057–2065 https://doi.org/10.1021/ma202265w
27	Jalbert C, Koberstein J, Yilgor I, Gallagher P, Krukonis V. Molecular weight dependence and end-group effects on the surface tension of poly(dimethylsiloxane). Macromolecules, 1993, 26(12): 3069–3074 https://doi.org/10.1021/ma00064a012
28	Zhai W, Kuboki T, Wang L, Park C, Lee E, Naguib H. Cell structure evolution and the crystallization behavior of polypropylene/clay nanocomposites foams blown in continuous extrusion. Industrial & Engineering Chemistry Research, 2010, 49(20): 9834–9845 https://doi.org/10.1021/ie101225f

[1]	. [J]. Front. Chem. Sci. Eng., 2017, 11(1): 139-142.
[2]	. [J]. Front. Chem. Sci. Eng., 2017, 11(1): 107-116.
[3]	. [J]. Front. Chem. Sci. Eng., 2017, 11(1): 133-138.
[4]	. [J]. Front. Chem. Sci. Eng., 2017, 11(1): 89-99.
[5]	. [J]. Front. Chem. Sci. Eng., 2017, 11(1): 15-26.
[6]	. [J]. Front. Chem. Sci. Eng., 2016, 10(4): 542-551.
[7]	. [J]. Front. Chem. Sci. Eng., 2016, 10(4): 480-489.
[8]	. [J]. Front. Chem. Sci. Eng., 2016, 10(4): 441-458.
[9]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 432-439.
[10]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 425-431.
[11]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 417-424.
[12]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 405-416.
[13]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 348-359.
[14]	. [J]. Front. Chem. Sci. Eng., 2016, 10(3): 301-347.
[15]	. [J]. Front. Chem. Sci. Eng., 2016, 10(1): 16-38.

Viewed

Full text

Abstract

Cited

Shared

Discussed