简介：Externalmagneticfieldincreasesthephoto-inducedpolymerizationrateofstyrenemicroemulsion.Thetypeofphotoinitiatorplaysanimportantrole.Thephotoinitiators,usedaredimethoxyphenylacetophenone(DMPA),1-hydroxycyclohexylphenylketone(Irgacure184)anddimethylhydroxyacetophenone(Darocur1173).Nomagneticeffectwasobservedbyusingdibenzylketone(DBK)asphotoinitiator.Themolecularweightofthepolymerisslightlyaffectedbymagneticfield.Theinfluenceoftemperaturehasalsobeeninvestigated.

简介：Desorptionofvolatileorganiccompounds(VOCs)frompolymericadsorbentsbymicrowavewasinvestigatedexperimentally.Twokindsoforganiccompounds,benzeneandtoluene,wereseparatelyusedasadsorbatesinthiswork.Resultsshowedthattheapplicationofmicrowavetoregeneratethepolymericadsorbentsnotonlycangethigherregenerationefficiencyincomparisonwiththeuseofheatregeneration,butalsomakethetemperaturesofthefixedbedsmuchlowerthanthatwhenusingtheheatregenerattonTheweakerthepolarityofapolymericadsorbent,theeasieritsregenerationwas.

简介：Fromaneconomicalpointofviewboththequalityoftheionexchangeresinsandthetechnologyusedinthefieldofindustrialwatertreatmentareimportantforasuccessfulperformance.Ingeneral,twodifferenttechnologieshavebeenestablishedonthemarket:ThemaindiffernecesbetweentheCO-andcountercurrenttechnologeswillbediscussedanddataconcerningtherequirementofchemicalsforregenerationandthequalityofthedeionizedwaterwillbeopposed.Inadditionseveraldifferentvarietiesofthemoderncountercurrenttechnologies,developedandpatentedbyBayerAG,willbedescribedandtheadvantages,dependingontheapplicationandthedemandonthequalityofthedeionizedwater,pointedout.Inviewofstrongerregulationsconcerningtheconsumptionofregenerationchemicals,andwastewater,andalsobecauseofthesuperiorqualityoftheproducedwater,themarketshareofcountercurrenttechnologieswillcontinuetoincreaseworld-wide.

简介：TheeffectsofmagneticfieldonthegraftratioandstereoregularityofgraftsofPVA-g-MMAinthepresenceofbenzophenoneduringUVirradiationarediscussed.BymeansofIR,itwasfoundthatthegraftratiowasincreasedwiththeincrementofmagneticfieldstrength.Furthermore,applicationofrelativeweakmagneticfieldof0.4Teslahadbeenshowntosubstantiallyenhancethestereo-regularityofgraftcopolymer.Themaximumstereo-regularityappearedwhenthegraftratioapproachedto85%withthemagneticfieldof1.2Tesla(T).Theresistancetomoistureandheatresistanceofthegraftedcopolymerinthepresenceofmagneticfieldwerealsoimproved.

简介：Asidechainliquidcrystallinecopolysiloxane,whichwouldshowelectro-opticeffectsasknownfromlowmassliquidcrystal,wassynthesizedbyhydrosilylationreaction,andthetwohomologousmonomerswithdifferentlengthspacerscontainingSchiff’sbasemesogenwith—NO2terminatedgroupweregraftedtoapolysiloxanemainchain.Residualmonomerincrudeproductiseffectiveinreinforcingtheresponsetoanelectricfieldoverthatofpurepolymericliquidcrystal.