PMID- 31083304
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 11
IP  - 5
DP  - 2019 May 10
TI  - Efficient Hydrophobic Modification of Old Newspaper and Its Application in Paper 
      Fiber Reinforced Composites.
LID - 10.3390/polym11050842 [doi]
LID - 842
AB  - Paper fibers have gained broad attention in natural fiber reinforced composites 
      in recent years. The specific problem in preparing paper fiber reinforced 
      composites is that paper fibers easily become flocculent after pulverization, 
      which increases difficulties during melt-compounding with polymer matrix and 
      results in non-uniform dispersion of paper fibers in the matrix. In this study, 
      old newspaper (ONP) was treated with a low dosage of gaseous 
      methyltrichlorosilane (MTCS) to solve the flocculation. The modified ONP fibers 
      were characterized by Scanning Electron Microscope (SEM), Fourier Transform 
      Infrared Spectroscopy (FTIR), and Thermogravimetric Analysis (TG). Then the 
      modified ONP fibers and high-density polyethylene (HDPE) were extruded and 
      pelletized to prepare ONP/HDPE composites via injection molding. Maleic 
      anhydride-grafted polyethylene (MAPE) was added to enhance the interfacial 
      bonding performance with the ultimate purpose of improving the mechanical 
      strength of the composites. The mechanical properties such as tensile, flexural, 
      and impact strength and the water absorption properties of the composite were 
      tested. The results showed that the formation of hydrogen bonding between ONP 
      fibers was effectively prevented after MTCS treatment due to the reduction of 
      exposed -OH groups at the fiber surface. Excessive dosage of MTCS led to severe 
      fiber degradation and dramatically reduced the aspect ratio of ONP fibers. 
      Composites prepared with ONP fibers modified with 4% (v/w) MTCS showed the best 
      mechanical properties due to reduced polarity between the fibers and the matrix, 
      and the relatively long aspect ratio of treated ONP fibers. The composite with or 
      without MAPE showed satisfactory water resistance properties. MTCS was proven to 
      be a cheap and efficient way to pretreat old newspaper for preparing paper fiber 
      reinforced composites.
FAU - Zhang, Weiwei
AU  - Zhang W
AD  - College of Materials and Energy, South China Agricultural University, Guangzhou 
      510642, China. zhangww@scau.edu.cn.
FAU - Gu, Jin
AU  - Gu J
AD  - College of Materials and Energy, South China Agricultural University, Guangzhou 
      510642, China. gujin@scau.edu.cn.
FAU - Tu, Dengyun
AU  - Tu D
AD  - College of Materials and Energy, South China Agricultural University, Guangzhou 
      510642, China. tudengyun@scau.edu.cn.
FAU - Guan, Litao
AU  - Guan L
AD  - College of Materials and Energy, South China Agricultural University, Guangzhou 
      510642, China. ltguan@scau.edu.cn.
FAU - Hu, Chuanshuang
AU  - Hu C
AD  - College of Materials and Energy, South China Agricultural University, Guangzhou 
      510642, China. cshu@scau.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20190510
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC6571775
OTO - NOTNLM
OT  - ONP fibers
OT  - composites
OT  - mechanical properties
OT  - silanization
COIS- The authors declare no conflict of interest.
EDAT- 2019/05/15 06:00
MHDA- 2019/05/15 06:01
PMCR- 2019/05/10
CRDT- 2019/05/15 06:00
PHST- 2019/03/21 00:00 [received]
PHST- 2019/04/24 00:00 [revised]
PHST- 2019/05/06 00:00 [accepted]
PHST- 2019/05/15 06:00 [entrez]
PHST- 2019/05/15 06:00 [pubmed]
PHST- 2019/05/15 06:01 [medline]
PHST- 2019/05/10 00:00 [pmc-release]
AID - polym11050842 [pii]
AID - polymers-11-00842 [pii]
AID - 10.3390/polym11050842 [doi]
PST - epublish
SO  - Polymers (Basel). 2019 May 10;11(5):842. doi: 10.3390/polym11050842.