Effect of layered double hydroxides on ultraviolet aging resistance of SBS modified bitumen membrane

Abstract

Layered double hydroxides (LDHs)/styrene-butadiene-styrene (SBS) copolymer modified bitumen was prepared by melt blending. The effect of LDHs on the ultraviolet (UV) aging behavior of SBS modified bitumen was investigated. The changes of chemical structures of modified bitumen before and after UV aging were characterized by Fourier transform infrared spectroscopy (FTIR). The results show that LDHs obviously reduce the variation of softening point and low temperature flexibility of SBS modified bitumen under different UV radiation intensities, which indicates that the UV aging resistance performance of SBS modified bitumen is improved effectively by LDHs. Compared with SBS modified bitumen, the changes of carbonyl, sulfoxide and butadienyl of LDHs/SBS modified bitumen decrease significantly after UV aging according to FTIR analysis, demonstrating that the oxidation and degradation reactions of SBS modified bitumen were restrained effectively by adding LDHs.

Keywords

SBS modified bitumen / layered double hydroxides / UV aging

References

[1] Rodriguez I, Dutt O, Paroli R M, et al. Effect of Heat-ageing on the Thermal and Mechanical Properties of APP- and SBS-modified Bituminous Roofing Membranes[J]. Mater. Struct., 1993, 26(6): 355-361.

[2] Lopes J G, Correia J R, Machado M X B. Dimensional Stability of Waterproofing Bituminous Sheets Used in Low Slope Roofs [J]. Constr. Build. Mater., 2011, 25(8): 3 229-3 235.

[3] Zhang H L, Jia X J, Yu J Y, et al. Effect of Expanded Vermiculite on Microstructures and Aging Properties of Styrene-Butadiene-Styrene Copolymer Modified Bitumen[J]. Constr. Build. Mater., 2013, 40(1): 224-230.

[4] Lu X H, Isacsson U. Chemical and Rheological Evaluation of Ageing Properties of SBS Polymer Modified Bitumens[J]. Fuel, 1998, 77(9): 961-972.

[5] Mouillet V, Lamontagne J, Durrieu F, et al. Infrared Microscopy Investigation of Oxidation and Phase Evolution in Bitumen Modified with Polymers [J]. Fuel, 2008, 87(7): 1 270-1 280.

[6] Wu S P, Pang L, Liu G, et al. Laboratory Study on Ultraviolet Radiation Aging of Bitumen [J]. J. Mater. Civil Eng., 2010, 22(Specialissue): 767-772.

[7] Mouillet V, Farcas F, Besson S. Ageing by UV Radiation of an Elastomer Modified Bitumen [J]. Fuel, 2008, 87(12): 2 408-2 419.

[8] Zhang H L, Yu J Y, Wu S P. Effect of Montmorillonite Organic Modification on Ultraviolet Aging Properties of SBS Modified Bitumen [J]. Constr. Build. Mater., 2012, 27(1): 553-559.

[9] Feng Z G, Xu S, Sun Y B, et al. Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives [J]. J. Test Eval., 2012, 40(5): 728-733.

[10] Feng Z G, Yu J Y, Zhang H L, et al. Effect of Ultraviolet Aging on Rheology, Chemistry and Morphology of Ultraviolet Absorber Modified Bitumen [J]. Mater. Struct., 2013, 46(7): 1 123-1 132.

[11] Wang J S, Wu S P, Han J, et al. Study on Preparation and UV Ageing Resistance Effect of LDHs Modified Asphalt [J]. Key Eng. Mater., 2012, 509: 194-202.

[12] Tzompantzi F, Mantilla A, Bañuelos F, et al. Improved Photocatalytic Degradation of Phenolic Compounds with ZnAl Mixed Oxides Obtained from LDH Materials [J]. Top. Catal., 2011, 54(1–4): 257-263.

[13] Venugopal B R, Shivakumara C, Rajamathi M. A Composite of Layered Double Hydroxides Obtained through Random Costacking of Layers from Mg-Al and Co-Al LDHs by Delamination-restacking: Thermal Decomposition and Reconstruction Behavior[J]. Solid State Sci., 2007, 9(3–4): 287-294.

[14] Chai H, Lin Y J, Evans D G, et al. Synthesis and UV Absorption Properties of 2-Naphthylamine-1,5-disulfonic Acid Intercalated Zn-Al Layered Double Hydroxides[J]. Ind. Eng. Chem. Res., 2008, 47(9): 2 855-2 860.

[15] Hsueh H B, Chen C Y. Preparation and Properties of LDHs/Polyimide Nanocomposites [J]. Polymer, 2003, 44(4): 1 151-1 161.

[16] Chai H, Xu X Y, Lin Y J, et al. Synthesis and UV Absorption Properties of 2,3-Dihydroxynaphthalene-6-sulfonate Anion-intercalated Zn-Al Layered Double Hydroxides[J]. Polym. Degrad. Stabil., 2009, 94(4): 744-749.

[17] Zhao Y L, Gu F, Xu J, et al. Analysis of Aging Mechanism of SBS Polymer Modified Asphalt Based on Fourier Transform Infrared Spectrum [J]. J. Wuhan Univ. Technol.-Mater. Sci. Ed., 2010, 25(6): 1 047-1 052.

[18] Lamontagne J, Dumas P, Mouillet V, et al. Comparison by Fourier Transform Infrared (FTIR) Spectroscopy of Different Ageing Techniques: Application to Road Bitumens[J]. Fuel, 2001, 80(4): 483-488.

[19] Siddiqui M N. Alkylation and Oxidation Reactions of Arabian Asphaltenes [J]. Fuel, 2003, 82(11): 1 323-1 329.

[20] Masson J F, Pelletier L, Collins P. Rapid FTIR Method for Quantification of Styrene-Butadiene Type Copolymers in Bitumen [J]. J. Appl. Polym. Sci., 2001, 79(6): 1 034-1 041.

[21] Zhang F, Yu J Y, Han J. Effects of Thermal Oxidative Ageing on Dynamic Viscosity, TG/DTG, DTA and FTIR of SBS- and SBS/Sulfurmodified Asphalts [J]. Constr. Build. Mater., 2011, 25(1): 129-137.

[22] Durrieu F, Farcas F, Mouillet V. The Influence of UV Aging of a Styrene/Butadiene/Styrene Modified Bitumen: Comparison Between Laboratory and on Site Aging [J]. Fuel, 2007, 86(10–11): 1 446-1 451.

[23] Cortizo M S, Larsen D O, Bianchetto H, et al. Effect of the Thermal Degradation of SBS Copolymers during the Ageing of Modified Asphalts [J]. Polym. Degrad. Stabil., 2004, 86(2): 275-282.