Nghiên cứu tạo bột giấy từ cỏ voi lai VA06 bằng phương pháp nấu xút

KHOA HOC C6N G NGH I

IMGHIEIM CUU TAO BOT GIAY T U CO VOI LAI VA0 6

BAIM G PHUOIMG PHA P IMAU XU T

Nguyin Thi Minh Nguy|tS Cao Qude An', Ld Quang Diln^

T6MTAT

Bai bao trinh bay cac kit qua nghien ciiu tao bpt giay tii than co voi lai VA06. Sau khi tao mlu theo phuang

phap tieu chuan nguyen Ueu co voi da dupc xac dinh thanh phan hoa hpc ca ban, nhu linhin 19,6%,

xenluloza 41,296, ddng thdi tien hanh xac dinh cac dieu kipn cong nghd tao bpt giay bang phuang phap nau

xut. Ket qua nghidn ciru cho thay, nau bpt giay bing phuong phap xdt ddi hdi mue diing kiim tuang ddi

cao. Nhidt dp nau thich hop la 150° - 160°C. Vdi thdi gian niu la 90-120 phiit d nhidt dp ndu ti-dn, bpt giay

thu duoc CO hidu suat 4245%. Phan tich tinh chat cua bpt gily thu dupc cho thly: Tri sd Kappa cua bpt chua

tay trang 23,8%. Xac dinh mpt sd tinh chat ca ly cua bpt: dp ben xe: 21,5 mN.mlg', dp ben keo: 51,2

N.m.g', dp chiu bue: 3,8 kPa.m^.g'. Kit qua tren cho thay, bpt giay tii than c&y co voi lai dap irng tieu chuan

lam nguyen lieu san xuat cac loai giay bao goi, giay bao, giay ve sinh. Tren ca sd cac kit qua nghien cuu

tren co the khang dinh than co voi lai VA06 nuoi trong tai Viet Nam co thi su dung lam nguyen lieu san

xuat bpt giay.

Tir khPa; Bot giay, co voi, giay, nau xut, nguyen lieu.

LDilTVANDE

Bpt giay chu ylu dupc san xuat tir nguyen lieu

gd bAng d e phuang phAp hda hpe nhu nau sunfit vA

nau kiim (nau xut hay sunfat), trong dd nau kiim IA

phuang phAp phd biin hon d . Sir khAc biet co ban

eua d c phuang phAp nau IA vi|e su dung cAc tAe

nhAn nau khAe nhau. NgoAi ra ddi vdi mdi loai

nguyen lieu (gd hay phi gd) can Ap dung quy trinh

nau khAe nhau nhim dat hidu qua eao nhat.

Trdn thi gidi tir lAu d e loai cAy ngin ngiy nhu

rom ra, ba mia, cAy day,... da dupc sii dung lam

nguydn lidu san xult bpt giay tren pham vi cdng

nghidp bang phuang phip nau xiit, niu sunfat [2].

Cd khdng it cdng trinh nghien ciru nhim hoAn thidn

cAc phuang phAp truyin thdng va dua ra cAc quy

trinh mdi. O Trung Qude cd mpt sd edng trinh

nghidn eiru vA dA Ap dung thAnh edng phuang phap

sin xuat bdt giay tir ed voi bang phuang phAp nau xiit

va nau sunfit [4].

ThAng 3/2007 Bd Cdng nghiep da phd duy|t quy

hoaeh phit triin nginh cdng nghidp giay Vi|t Nam

den nam 2010, trong dd ndu bat mue tidu dip irng dii

nhu d u nguydn Udu dl cung cap cho sin xult

600.000 tan bdt giay vio nam 2010 va 1.800.000 tin

vio nam 2020. Trudc tinh hinh dd, vide quy hoaeh

md rpng viing nguydn lieu, da dang hda ngudn

nguyen lieu dang dupc dac bidt quan tAm. Ben eanh

dd, van dl ddi mdi co d u eay trdng, tan dung hidu

' TS. Truang D^i hpc Lam nghi?p.

^ TS. Trudng D^i hpc Bach Khoa Ha Npi.

qui quy dat canh tie nhim tao ra nhiing san pham

mdi, mang lai loi ieh kinh tl, ludn 11 van dl cap thilt

cua ndng nghidp nudc nhi.

Qua nhiiu nam gieo trdng va thu hoaeh din nay

ed voi lai VA06 la loai cAy ndng nghidp ed khi nAng

phit triin tdt, eho nang suit eao, cd y nghla ldn ddi

vdi nganh chan nudi gia siic. Da ed nhiiu cdng trinh,

dl tii nghidn ciiu, dinh gii thinh phan dinh dudng

vl tilm nang ciia loai ed nay, vl khi nang sir dung

lim nguydn h|u san xuat etanol sinh hpc [1] hay bdt

giay (bpt co). Vi vay mdt nghien eiiu tao bdt gily tii

tiian eay ed voi VA06 bing phuong phip hda hpc sd

gdp phan quan trpng trong vide dinh gii su dung

loai nguydn lidu niy cho chi biin hda - smh hpc

nhim tao ra d c san pham cd gii til kinh tl cao vl

gdp phin dinh gia tilm nang phit trien ciia loai cd

nay.

L NGUYEN, VAT L f U VA PHUONG PHitP NGHIEN CUU

1. Nguydn li|u vl xu ly nguydn li|u

Ddi tirpng nghidn ciiu 11 tiian co voi lai VA06

dupc ti-dng tai Trung tim Nghidn ciiu Ddng cd Bd

sua Ba Vi, huy|n Ba Vi. HI Npi. Qui tiinh lay mlu

dupc tiin hinh vio thing 3 duong ljch.

Cd voi dupc chpn cho nghidn ciru cd do tiidi tir 2

din 6 tiling, ehpn liy phin tiian cay (bd gdc, ngpn,

rl, IA), rira saeh va dl khd ttr nhidn, sau dd tiin hanh

tao minh nguydn lidu vdi kieh tiiudc phii hpp dl nau.

Nghidn eiiu dupc tiin hanh tai Trung tam Thuc

nghiem, Trudng Dai hpc Lam nghidp.

90 NONG NGHlf P VA PHAT TRIEN N6N G THCN - KY 2 - THANG 4/201