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Target Concepts:
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Query: UMLS:C0432222 (
SEM
)
47,337
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Degradable, flame retardant, and flexible nanocomposite films with low dielectric constant were prepared with poly (lactic acid) (PLA), nano ZIF-8@GO, and degradable flame-retardant resorcinol di(phenyl phosphate) (
RDP
). The
SEM
results of the fractured surfaces indicated that ZIF-8@GO and
RDP
were dispersed uniformly in the PLA matrix. The prepared films had good mechanical properties and the tensile strength of the film with 1.5 wt% of ZIF-8@GO was increased to 48.2 MPa, compared with 38.5 MPa of pure PLA. Meanwhile, the nanocomposite films were flexible due to the toughing effect of
RDP
. Moreover, above 27.0% of limited oxygen index (LOI) and a VTM-0 rating were achieved for the nanocomposite films. The effects of nano ZIF-8@GO hybrids and
RDP
on the dielectric properties were investigated, and the results showed that ZIF-8@GO and
RDP
were beneficial in reducing the dielectric constant and dielectric loss of the nanocomposites.
...
PMID:Preparing the Degradable, Flame-Retardant and Low Dielectric Constant Nanocomposites for Flexible and Miniaturized Electronics with Poly(lactic acid), Nano ZIF-8@GO and Resorcinol Di(phenyl phosphate). 3023 68
The current work presented here focuses on the remediation of mercury from water using modified low-cost materials. Modified date pits, low cost, minimal pretreatment steps and locally abundant agricultural waste materials were effectively employed as an adsorbent for remediating Hg
2+
from aqueous media. Physical and chemical modification were developed such as thermal roasting (
RDP
), sulfur (SMRDP) and silane (SIMRDP) based modifications. Results showed that maximum adsorption by
RDP
was at pH 6, AC and both modifications was at pH 4. Furthermore,
RDP
has exothermic adsorption mechanism while AC, SMRDP, and SIMRDP have endothermic. All adsorbents except SIMRDP have spontaneous adsorption process.
SEM
analysis showed that the surface morphology of
RDP
was not significantly affected by different treatments while surface of AC was affected. The investigation for good adsorbents for Hg
2+
uptake from different anthropogenic sources has been carried out by many investigators worldwide towards having a safe environment. In the current study, the highest Hg
2+
adsorption of SMRDP was relatively high compared to other known adsorbents.
...
PMID:Adsorptive removal of mercury from water by adsorbents derived from date pits. 3165 83
