@article{MTMT:33838236, title = {Pyrolytic characteristics, kinetics, thermodynamics, volatile products and chemical reactions of micron polypropylene infiltrated with kerosene}, url = {https://m2.mtmt.hu/api/publication/33838236}, author = {Liu, Yitao and Zhao, Zhiyuan and Chen, Ruiyu and Xu, Xiaokang}, doi = {10.1016/j.jaap.2023.105939}, journal-iso = {J ANAL APPL PYROL}, journal = {JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS}, volume = {171}, unique-id = {33838236}, issn = {0165-2370}, abstract = {The pyrolysis of polymers infiltrated with combustible liquids is one common behavior in the fire accidents resulted by the leakage and overflow of combustible liquids over polymers. The present study may provide a theoretical basis and guidance for the prediction of fire development, the selection or design of fire detection and the design of ventilation and fire extinguishing systems. In the present study, the thermal decomposition be-haviors, kinetics, thermodynamics, volatiles and chemical reactions of micron polypropylene (typical polymer) infiltrated with kerosene (typical combustible liquid) are investigated. It is concluded that the thermal decom-position process of micron PP with kerosene can be divided into two stages, and all stages can be considered as one-step reaction. As the kerosene content increases, the average and peak reaction rates of the first stage in-crease, while they decrease for the second stage and the whole process. As the heating rate increases, the average and peak reaction rates of the whole process decrease. In addition, increasing the heating rate or kerosene content may result in better combustion performance compared with that of pure PP. The calculated average activation energy, pre-exponential factor and global reaction model of the second stage can well predict the thermal decomposition behaviors of this stage. Thermodynamic analysis shows that the thermal decomposition of micron PP with kerosene is an endothermic and non-spontaneous reaction. The main volatile products contain olefins, alkynes, alkanes, hydrogen, carbon dioxide, carbon monoxide and aromatic compounds. The possible chemical reactions generating the above-mentioned products are deduced.}, keywords = {KINETICS; thermal decomposition; Volatile products; TG-FTIR-MS; Micron polypropylene; Combustible liquids}, year = {2023}, eissn = {1873-250X} } @article{MTMT:32359579, title = {Influence of surface oxidation on the quantification of polypropylene microplastics by pyrolysis gas chromatography mass spectrometry}, url = {https://m2.mtmt.hu/api/publication/32359579}, author = {Toapanta, Tania and Okoffo, Elvis D. and Ede, Sarah and O'Brien, Stacey and Burrows, Stephen D. and Ribeiro, Francisca and Gallen, Michael and Colwell, John and Whittaker, Andrew K. and Kaserzon, Sarit and V. Thomas, Kevin}, doi = {10.1016/j.scitotenv.2021.148835}, journal-iso = {SCI TOTAL ENVIRON}, journal = {SCIENCE OF THE TOTAL ENVIRONMENT}, volume = {796}, unique-id = {32359579}, issn = {0048-9697}, abstract = {The influence of photo-oxidation on the quantification of isotactic polypropylene by Pyrolysis Gas Chromatography/ Mass Spectrometry (Pyr-GC/MS) was assessed. Beads (oval shape, similar to 5 mm) and fragments (irregular shaped, 250-50 mu m and 500-1000 mu m) were subjected to relatively harsh simulated accelerated weathering conditions (using a filtered xenon-arc reproducing sunlight's full spectrum) for up to 37 and 80 days, respectively. Samples collected (n = 10 replicates for each treatment) at increasing number of weathering days were analysed by Fourier-transform infrared spectroscopy with Attenuated Total Reflection (FTIR-ATR), scanning electron microscopy, and differential scanning calorimetry in order to assess the extent and the rate of degradation. The rate of surface oxidation occurred faster for fragments compared to beads, probably due to their higher surface area. Quantification of the polypropylene trimer (2,4-dimethyl-1-heptene) via double shot Pyr-GC/MS, showed that the signal of the trimer relative to the mass of polypropylene was reduced through weathering with a degradation rate of 1:3 faster for fragments over beads. Signal reduction and carbonyl index were correlated to show that polypropylene with a carbonyl index of >= 13 has a significantly reduced 2,4-dimethyl-1-heptene signal when compared to virgin material. Consequently, the quantification of polypropylene subjected to weathering under harsh conditions may be underestimated by 42% (fragments, carbonyl index: 18) to 49% (beads, carbonyl index: 30) when quantified by Pyr-GC/MS and using virgin polypropylene calibration standards. Pyrolysis at a lower temperature (350 degrees C) identified six degradation specific markers (oxidation products) that increased in concentration with weathering. Further comparisons between virgin and weathered microplastics may need to be considered to avoid underestimation of microplastic concentrations in future studies. (C) 2021 Elsevier B.V. All rights reserved.}, keywords = {scanning electron microscopy (SEM); Differential scanning calorimetry (DSC); surface oxidation; Fourier-transform infrared spectroscopy (FTIR); carbonyl index; Accelerated artificial weathering}, year = {2021}, eissn = {1879-1026} } @article{MTMT:24379731, title = {Different aspects of the accelerated oxidation of polypropylene at increased pressure in an autoclave with regard to temperature, pretreatment and exposure media}, url = {https://m2.mtmt.hu/api/publication/24379731}, author = {Bajer, K and Braun, U}, doi = {10.1016/j.polymertesting.2014.05.006}, journal-iso = {POLYM TEST}, journal = {POLYMER TESTING}, volume = {37}, unique-id = {24379731}, issn = {0142-9418}, year = {2014}, eissn = {1873-2348}, pages = {102-111} } @article{MTMT:23578211, title = {Real-time quantitative analysis of volatile products generated during solid-state polypropylene thermal oxidation}, url = {https://m2.mtmt.hu/api/publication/23578211}, author = {Francois-Heude, A and Richaud, E and Leprovost, J and Heninger, M and Mestdagh, H and Desnoux, E and Colin, X}, doi = {10.1016/j.polymertesting.2013.04.008}, journal-iso = {POLYM TEST}, journal = {POLYMER TESTING}, volume = {32}, unique-id = {23578211}, issn = {0142-9418}, year = {2013}, eissn = {1873-2348}, pages = {907-917} } @article{MTMT:23578212, title = {Natural weathering studies of biobased thermoplastic starch from agricultural waste/polypropylene blends}, url = {https://m2.mtmt.hu/api/publication/23578212}, author = {Pang, MM and Pun, MY and Ishak, ZAM}, doi = {10.1002/app.39054}, journal-iso = {J APPL POLYM SCI}, journal = {JOURNAL OF APPLIED POLYMER SCIENCE}, volume = {129}, unique-id = {23578212}, issn = {0021-8995}, year = {2013}, eissn = {1097-4628}, pages = {3237-3246} } @article{MTMT:22940993, title = {Effect of alkali and ultraviolet aging on physical, thermal, and mechanical properties of fibers for potential use as reinforcing elements in glass/silicate composites}, url = {https://m2.mtmt.hu/api/publication/22940993}, author = {Akonda, MH and Kandola, BK and Horrocks, AR}, doi = {10.1002/pat.2067}, journal-iso = {POLYM ADVAN TECHNOL}, journal = {POLYMERS FOR ADVANCED TECHNOLOGIES}, volume = {23}, unique-id = {22940993}, issn = {1042-7147}, year = {2012}, eissn = {1099-1581}, pages = {1454-1463} } @article{MTMT:22940992, title = {Literature survey for a first choice of a fuel-oxidiser couple for hybrid propulsion based on kinetic justifications}, url = {https://m2.mtmt.hu/api/publication/22940992}, author = {Gascoin, N and Gillard, P and Mangeot, A and Navarro-Rodriguez, A}, doi = {10.1016/j.jaap.2011.11.006}, journal-iso = {J ANAL APPL PYROL}, journal = {JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS}, volume = {94}, unique-id = {22940992}, issn = {0165-2370}, year = {2012}, eissn = {1873-250X}, pages = {1-9} } @article{MTMT:21595679, title = {Studies on the emission behavior of polypropylene by gas chromatography/mass spectrometry with static headspace or thermodesorption}, url = {https://m2.mtmt.hu/api/publication/21595679}, author = {Reingrubera, E and Reussner, J and Sauer, C and Standler, A and Buchberger, W}, doi = {10.1016/j.chroma.2010.11.021}, journal-iso = {J CHROMATOGR A}, journal = {JOURNAL OF CHROMATOGRAPHY A}, volume = {1218}, unique-id = {21595679}, issn = {0021-9673}, year = {2011}, eissn = {1873-3778}, pages = {3326-3331} } @article{MTMT:21246265, title = {Study on the Effects of Nucleating Agents on Photooxidation Degradation of PP by FTIR and IM}, url = {https://m2.mtmt.hu/api/publication/21246265}, author = {Li, JF and Yang, R and Yu, J and Wang, KH and Liu, Y}, doi = {10.3964/j.issn.1000-0593(2009)04-0918-04}, journal-iso = {SPECTROSC SPECT ANAL}, journal = {SPECTROSCOPY AND SPECTRAL ANALYSIS}, volume = {29}, unique-id = {21246265}, issn = {1000-0593}, year = {2009}, eissn = {1000-0593}, pages = {918-921} } @article{MTMT:10083372, title = {Effects of natural weathering on properties of recycled newspaper-filled polypropylene (PP)/natural rubber (NR) composites}, url = {https://m2.mtmt.hu/api/publication/10083372}, author = {Ismail, H and Osman, H and Mariatti, M}, doi = {10.1080/03602550802129650}, journal-iso = {POLYM-PLAST TECHNOL}, journal = {POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING}, volume = {47}, unique-id = {10083372}, issn = {0360-2559}, year = {2008}, eissn = {1525-6111}, pages = {697-707} } @article{MTMT:10083374, title = {Natural weathering effects on the mechanical and surface properties of polyphenylene sulphide (PPS) composites}, url = {https://m2.mtmt.hu/api/publication/10083374}, author = {Sinmazcelik, T}, doi = {10.1016/j.matdes.2004.10.022}, journal-iso = {MATER DESIGN}, journal = {MATERIALS AND DESIGN}, volume = {27}, unique-id = {10083374}, issn = {0264-1275}, year = {2006}, eissn = {1873-4197}, pages = {270-277} } @article{MTMT:21855871, title = {Solid phase microextraction to concentrate volatile products from thermal degradation of polymers}, url = {https://m2.mtmt.hu/api/publication/21855871}, author = {Bortoluzzi, JH and Pinheiro, EA and Carasek, E and Soldi, V}, doi = {10.1016/j.polymdegradstab.2004.12.021}, journal-iso = {POLYM DEGRAD STABIL}, journal = {POLYMER DEGRADATION AND STABILITY}, volume = {89}, unique-id = {21855871}, issn = {0141-3910}, year = {2005}, eissn = {1873-2321}, pages = {33-37} } @article{MTMT:23647911, title = {Chapter 6 Polymers with saturated carbon chain backbone}, url = {https://m2.mtmt.hu/api/publication/23647911}, doi = {10.1016/S0167-9244(05)80007-1}, journal-iso = {Techniques and Instrumentation in Analytical Chemistry}, journal = {Techniques and Instrumentation in Analytical Chemistry}, volume = {25}, unique-id = {23647911}, issn = {0167-9244}, year = {2005}, pages = {185-437} } @article{MTMT:24510898, title = {Characterization of talc/calcium carbonate filled polypropylene hybrid composites weathered in a natural environment}, url = {https://m2.mtmt.hu/api/publication/24510898}, author = {Leong, YW and Abu, Bakar MB and Ishak, ZAM and Ariffin, A}, doi = {10.1016/j.polymdegradstab.2003.08.004}, journal-iso = {POLYM DEGRAD STABIL}, journal = {POLYMER DEGRADATION AND STABILITY}, volume = {83}, unique-id = {24510898}, issn = {0141-3910}, year = {2004}, eissn = {1873-2321}, pages = {411-422} } @article{MTMT:10083375, title = {Thermal and catalytic cracking of a LDPE-EVA copolymer mixture}, url = {https://m2.mtmt.hu/api/publication/10083375}, author = {Serrano, DP and Aguado, J and Escola, JM and Rodriguez, JM and Morselli, L and Orsi, R}, doi = {10.1016/S0165-2370(03)00037-8}, journal-iso = {J ANAL APPL PYROL}, journal = {JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS}, volume = {68-9}, unique-id = {10083375}, issn = {0165-2370}, year = {2003}, eissn = {1873-250X}, pages = {481-494} }