PMID- 31390720 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 11 IP - 8 DP - 2019 Aug 6 TI - Structural Characterization and Analysis of High-Strength Laminated Composites from Recycled Newspaper and HDPE. LID - 10.3390/polym11081311 [doi] LID - 1311 AB - Recycled newspaper (NP) shows excellent potential as a reinforcement for polymer composites. Herein, high-strength laminated composites were prepared by using NP laminas as reinforcement and high-density polyethylene (HDPE) films as matrix. Physical and mechanical properties of the laminated composites were measured. It was found that the flexural strength of the composites had a good linear relationship to its density, with R(2) = 0.9853. The flexural and tensile strength of the composites at the maximum density (1.40 g/cm(3)) reached up to 95.6 +/- 2.4 MPa and 99.4 +/- 0.8 MPa, respectively. SEM results showed that NP layer inside the composite became compact at the hot pressing time of 40 min, because the melted HDPE permeated into the NP layers to bond the NP fibers. Quantitative description of the composite porosity was conducted according to the density of the composite. The 24-h water absorption of the composite was highly related to its porosity, with R(2) = 0.8994. This study reveals that density of laminated composites is an important parameter, which could be used to forecast the mechanical strength, and its derived value, porosity of the composites, could be used to predict the water absorption behavior of the composite. FAU - Zheng, Binwei AU - Zheng B AUID- ORCID: 0000-0001-6791-3523 AD - College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. FAU - Hu, Chuanshuang AU - Hu C AD - College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. cshu@scau.edu.cn. FAU - Guan, Litao AU - Guan L AD - College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. FAU - Gu, Jin AU - Gu J AD - College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. FAU - Guo, Huizhang AU - Guo H AUID- ORCID: 0000-0002-9695-5092 AD - Wood Materials Science, Institute for Building Materials, ETH Zurich, Stefano-Franscini-Platz, 38093 Zurich, Switzerland. FAU - Zhang, Weiwei AU - Zhang W AD - College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China. zhangww@scau.edu.cn. AD - Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China. zhangww@scau.edu.cn. LA - eng GR - 2017B020238003/Guangdong Science and Technology Department/ PT - Journal Article DEP - 20190806 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC6723509 OTO - NOTNLM OT - density OT - laminated composites OT - microstructure OT - porosity OT - recycled newspaper COIS- The authors declare no conflict of interest. EDAT- 2019/08/09 06:00 MHDA- 2019/08/09 06:01 PMCR- 2019/08/06 CRDT- 2019/08/09 06:00 PHST- 2019/07/03 00:00 [received] PHST- 2019/07/22 00:00 [revised] PHST- 2019/07/23 00:00 [accepted] PHST- 2019/08/09 06:00 [entrez] PHST- 2019/08/09 06:00 [pubmed] PHST- 2019/08/09 06:01 [medline] PHST- 2019/08/06 00:00 [pmc-release] AID - polym11081311 [pii] AID - polymers-11-01311 [pii] AID - 10.3390/polym11081311 [doi] PST - epublish SO - Polymers (Basel). 2019 Aug 6;11(8):1311. doi: 10.3390/polym11081311.