Preparation and oil absorption performance of PET open⁃cell foams

doi:10.19491/j.issn.1001-9278.2023.02.004

Abstract

Abstract:

The effects of pyromellitic dianhydride （PMDA） dosage， foaming temperature， and the pressure⁃dropping rate on the formation of open⁃cell foams were investigated. The results indicated that the PET open⁃cell foams with a foa⁃ming rate of 35 times and an opening rate of 96.3 % could be prepared at a foaming temperature of 216 ℃ and a PMDA dosage of 0.6 phr together with a high pressure⁃dropping rate. Polytetrafluoroethylene （PTFE） and organic modified montmorillonite （MMT） were introduced into the PET open⁃cell foams during the preparation process. PTFE and MMT presented a heterogeneous nucleation effect to reduce the size of the cell and widen the foaming window temperature of PET open⁃cell foams. The PET open⁃cell foam with a smaller cell size （10~100 μm） and an almost foaming rate of 40 times was successfully fabricated within a wider foaming temperature window of 222~228 ℃. The open⁃cell foam could absorb various petroleum products such as gasoline， diesel， kerosene， light crude oil and heavy crude oil. The oil absorption behavior of the open cell foams with a high open⁃cell rate was investigated. The open cell foams exhibited a good absorption capacity along with a high open⁃cell rate of around 8~30 g/g.

Key words: polybutylene terephthalate, open?cell foam, oil absorption

CLC Number:

TQ328

WU Feng, HAN Shuo, CHEN Shihong, WANG Xiangdong. Preparation and oil absorption performance of PET open⁃cell foams[J]. China Plastics, 2023, 37(2): 22-30.

Figures/Tables 12

样品编号	PET/份	PMDA/份	MMT/份	PTFE/份
1^#	100	0	—	—
2^#	100	0.30	—	—
3^#	100	0.45	—	—
4^#	100	0.60	—	—
5^#	100	0.75	—	—
6^#	100	0.75	0.05	—
7^#	100	0.75	0.10	—
8^#	100	0.75	0.15	—
9^#	100	0.45	—	0.10
10^#	100	0.45	—	0.30
11^#	100	0.45	—	0.50
12^#	100	0.45	—	0.70

Tab.1. Formula of PET

Fig.1. Rheological behavior of PET composites with different PMDA contents

Fig.2. Crystallization behavior of PET composites with different PMDA contents

Fig.3. SEM images of PET open⁃cell foam at different temperature

Fig.4. Formation mechanism of open cell foam

Fig.5. Rheological behavior of PET composites with different MMT and PTFE contents

Fig.6. Rheological behavior of PET composites with different MMT and PTFE contents

Fig.7. SEM images of PET/MMT foam at different temperature

Fig.8. SEM images of PET/PTFE foam at different temperature

Fig.9. Cell density of PET and PET/PTFE foams

Fig.10. Foaming temperature window of PET open⁃cell foam

Fig.11. Opening rate and oil absorption rate of the samples

References 16

1	Rizvi Ali， Tabatabaei Alireza， Vahedi Pouria， et al. Non⁃crosslinked thermoplastic reticulated polymer foams from crystallization⁃induced structural heterogeneities［J］. Polymer， 2018，135： 185⁃192.
2	Rizvi A， Chu R， Lee J H， et al. Superhydrophobic and oleophilic open⁃cell foams from fibrillar blends of polypropylene and polytetrafluoroethylene［J］. ACS Applied Materials & Interfaces， 2014， 6（23）：21 131⁃21 140.
3	Lee P C， Wang J， Park C B. Extruded open⁃cell foams using two semicrystalline polymers with different crystallization temperatures［J］. Industrial & Engineering Chemistry Research， 2006， 45（1）： 175⁃181.
4	Lee P C， Naguib H E， Park C B， et al. Increase of open⁃cell content by plasticizing soft regions with secondary blowing agent［J］. Polymer Engineering & Science， 2010， 45（10）：1 445⁃1 451.
5	Bao J B， Liu T， Zhao L， et al. Supercritical carbon dioxi⁃de induced foaming of highly oriented isotactic polypropyle⁃ne［J］. Industrial & Engineering Chemistry Research， 2011， 50（23）：13 387⁃13 395.
6	Jiang C， Han S， Chen S， et al. The role of PTFE in⁃situ fibrillation on PET microcellular foaming［J］. Polymer， 2020， 212：123171.
7	Yao S， Guo T， Liu T， et al. Good extrusion foaming performance of long⁃chain branched PET induced by its enhanced crystallization property［J］.Applied Polymer， 2020：1⁃16.
8	戴剑锋，余炜，周持兴，等.聚对苯二甲酸乙二醇酯扩链产物的分子结构［J］.高分子材料科学与工程， 2009， 25（10）：71⁃73.
9	何路东，王向东，刘本刚，等. PET/纳米蒙脱土复合材料的制备及连续挤出发泡［J］. 塑料，2011，40（5）：49⁃53.
	HE L D， WANG X D， LIU B G，et al. Preparation and continuous extrusion foaming behavior of poly （ethylene terephthalate） /montmorillonoid nanocomposite［J］. Plastics，2011，40（5）：49⁃53.
10	Yao S， Hu D， Xi Z， et al. Effect of crystallization on tensile mechanical properties of PET foam： Experiment and model prediction［J］. Polymer Testing， 2020， 90：106649.
11	Kong W L， Bao J B， Wang J， et al. Preparation of open⁃cell polymer foams by CO₂ assisted foaming of polymer blends［J］. Polymer， 2016：331⁃341.
12	Wang W， Yu K， Zhou H， et al. The Effect of compatibili⁃zation on the properties and foaming behavior of poly（ethy⁃lene terephthalate）/poly（ethylene⁃octene） blends［J］. Cellular Polymers， 2017， 36（6）：313⁃332.
13	Wei L， Qi Y， Sun J， et al. Improving the foaming and mechanical properties of the in situ⁃ microfiber⁃reinforced polyethylene terephthalate/polypropylene composites through compatibilization［J］. Polymer Bulletin， 2017， 74：4 055⁃4 068.
14	Rizvi A. Functional polymer foams from in⁃situ fibrillated polymer blends［D］. Canada：University of Toronto， 2015.
15	Kohlhoff Dominik， Ohshima Masahiro. Open cell microcellular foams of polylactic acid （PLA）⁃based blends with semi⁃interpenetrating polymer networks［J］. Microcellular Journals， 2011， 296，770⁃777.
16	陈振，张增志，丛中卉，等. 开孔型聚合物发泡材料的研究及应用进展［J］. 材料工程，2020，3：1⁃9.
	CHEN Z， ZHANG Z Z， CONG Z H，et al. Research and application progress of open⁃cell polymeric foams［J］. Journal of Materials Engineering，2020，3：1⁃9.

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