Qemis3 Magazine

“ ASCIENCEMAGAZINE1stedition2020

“

FISHOIL

Itiswisenottoseekasecret,
andhonestnottorevealone!
Moreinside!

CHEMISTRYUNIT,CENTREOFFOUNDATIONSTUDIESFORAGRICULTURALSCIENCES,
UNIVERSITIPUTRAMALAYSIA.

FROMTHECHIEFEDITOR

contents PAGE

PAGE

Sorbitoloftenisusedinmodern
cosmeticsasahumectantandthicken-
erand help to penetrateplaque,a
dryingagent,whichencouragesbacte-
rialactivityinthemouth,releasing
moremalodorousvolatilesulfurcom-
pounds.

“Butitwasn’ta
successuntilthe
1920s,whenitwas

pitchedasa
solutionfor
‘chronichalitosis’”





5



PLASTIC

THEMOSTVERSATILE
ANDWORLDWIDE
MATERIAL

Thechemistry
behindit

PolyvinylChloride PolymethylMethacrylate

Themostsignificantpropertiesof PolymethylMethacrylatehassignifi-
PolyvinylChloride(PVC)isDensity, cantpropertieswhichisexcellentclar-
PVCisverydensecomparedtomost ityandUVresistance.Goodabrasion
plastics. Second,Hardness.Rigid resistance,hardnessand stiffness.
PVC isveryhard.Third,Strength. Low waterabsorption.Low smoke
Rigid PVChasextremelygoodten- emission.Goodtrackandarcresis-
tance.

PROPERTIESOF

“Plasticsaredivided PLASTICS
intoseveraltypes
Resistancetocorrosionand
andeachtypehasits
owncompoundand chemicals.

uses.Doyouall PolyethyleneTerephthalate Lowelectricalandthermal
know?”
PolyethyleneTerephthalate(PET) conductivity.
isuseasachemicalresistance.PET
doesnotreactwithwaterorfood Highstrength-to-weightratio.
whichisoneofthereasonsitisused
for consumable packaging.Second, Varietyofcolors.
StrengthtoWeightRatio.PETisvery
strongforitslightweight. Gooddurability.

Cheap

Easytomanufacture.

Resistanttowater. 7

References:Vert,Michel;Doi,Yoshiharu;Hellwich,Karl-Heinz;Hess,Michael;Hodge,Philip;Kubisa,Przemyslaw;Rinaudo,Marguerite;Schué,François(2012).

"Terminologyforbiorelatedpolymersandapplications(IUPACRecommendations2012)"(PDF).PureandAppliedChemistry.84(2):377–410

Hansen,Claus;etal.(2010)."Elevatedantimonyconcentrationsincommercialjuices".JournalofEnvironmentalMonitoring.12(4):822–4

HEALTHYHAIR

SECRETS

UsingVolumisingandScalp
CareIngredient

ByAina(AS09813)

thechemistry
behindit

Potassiumsorbate 3,7-Dimethylocta-1,6-dien-3-ol

Mildpreservativeusedincosmet- Naturallyfoundinmanyflowers
icandskincareformulasto prevent andspiceplants.Itactsas avolatile
orretardthegrowthofmicroor- oilcomponentandanantimicrobial
ganisms agent.

Allantoin “Myhairhasmuch
Naturalsoothingandanti-irritat- morevolumeandis
ingskin protectant.Itenhances fluffierafterusing
lymph fluid circulation and pro- thisproduct!Justby
motesandacceleratescellprolifera- usingitcontinuosly
tion.Italsoimprovestheelasticity forafewweeks,I’ve
seenmyhairbecome
8andsoftnessofhair muchmorehealthier.

Ifeelmore
confident!”

References:TShageihbaavniiFN,M (2o0o1s3a)vPi-oMtaosvsaiuhmedisoArAba,tBeoahslaonolAiMGE,HaacdtiivAatloijranfovranhdumHa,nSaslearmumiMa,lbMumagihnaimnithP,eSparbeoseunryceAaAn,dFaabrsheandcieMo,fYgoluucsoefsieR. I,nHtearbniabtii-oRneazlajeoiuMrn,al

ofbiologicalmacromolecules 62,146-154 [PubMed:24001567]
D'AquinoS,FaddaA,BarberisA,PalmaA,AngioniA,SchirraM (2013)Combinedeffectsofpotassiumsorbate,hotwaterandthiabendazole
againstgreenmouldofcitrusfruitandresiduelevels. Foodchemistry 141, 858-864 [PubMed:23790859]