KHOA
HQC
CdNG NGHfi
IVGHIEIM
CUU KHA IXIAIXIG
SAIXI
XUAT BOT
GlAY
TU
CAY
LUOIXIG {Dedra
calamus baratus
Hsucti et
D. Z. Li)
Cao
Qudc
An*
T6MTAT
Luong thuoc hp phu tre
triic,
bp h6a thao,
dupe
trong rat pho bidn
a
cac tinh
nhir
Thanh Hoa, Hoa Bmh,
Nghd
An, Ha
Tmh,...
Tir
trudc
ddn nay,
cSy
ludng chu ydu
dupe
dimg lam nguydn
li^u
dan
lat
san xuat
van
nhan tao, hay dung trong kidn truc,...cung da co nhimg nha may san xudt gily sti dung
thSn
cdy
ludng
d^
lam nguyen lidu san xuat bpt tuy nhidn, nhiing nghien cuu ca ban ve dac didm td thanh boa hpc, hay ky
thuat san xuat bpt giay sun phat tir than cay luong thi rat it
dupe
cong
bd.
Nguydn
li#u dupe
sti
dtJUig
trong
nghidn cuu la cay ludng
3
tudi,
khai thac tai huydn Luong
Son,
tinh Hoa
Binh.
Thuc
nghidm dupe
tidn
hanh
tai Trung tam thi
nghidm
Khoa Che bien Lam san, Trudng
D^
hpc Lam
nghi$p.
Kdt qua xac djnh thanh
phan boa hpc ciia nguyen lidu cay luong cho thly: Kich thuoc chidu dai spi 2,29 mm, chidu rpng spi 0,016
mm, dp th6 ciia spi la
143,
ham lupng
tro
1,08%,
ham lupng chdt tan trong nuoc nong
8,10%,
ham lupng
ch^t
tan trong nuoc lanh 3,59%, ham lupng chat chidt sudt trong NaOH
1%
la
17,65%,
ham lupng xenluloza
48,77%,
ham lupng linhin
24,74%,
dp pH cua nguyen
li^u
5,65. Kdt qua nghidn ctiu cho thdy, khi ndu bdt
giay sun phat tir nguydn
li$u
cay luong Hoa Binh
nhi$t
dp
ndu thich hpp la
160^C,
thdi gian bao dn
90
phtit
va lupng hda chat
sir
dung
la
18%.
Tukhda:
Bdt giay sun
phat,
cay luong Hda
Binh,
do
tringcua
bdt,
hi$u
suatbdtgiay.
LDATVANOE
Hidn nay, cdc nhd khoa hpc da xdc djnh dupe tre
tnic cd hon 70 hp va 120 loai khac nhau, vdi tdng
didn tich khoang 16 tridu
fade
ta, dupe phdn bd a dc
khu vuc nhidt ddi vd d nhidt ddi,
chi
cd mdt sd it lodi
tre tnic dupe phdn bd a dc vimg dn ddi.
O
Vidt Nam,
do didu kidn dat dai thich hpp, ndn nhiing dy trdng
thudc hp tre tnic thirdng phdt tridn
rIt
nhanh. Ludng
la mdt trong sd nhiing lodi cdy dupe trdng khd phd
bien d cdc tinh: Thanh Hod, Nghd An, Ha Tmh, Hod
Binh... day la loai cay dd trdng, dd chdm sdc, trdng
mdt lan cd the thu hoach tir 40
-
50 nam, vi vdy, nhidu
ddn tpc d midn mii chpn cay ludng lam cdy phdt tiidn
kinh td gia dinh, cay xod ddi gidm nghdo.
Trong didu kidn ngudn nguyen Udu gd sii dung
cho cdc ngdnh chd bidn lam san vd cdng nghidp sdn
xult gily hidn nay cua
Vi^t
Nam ngdy dng kham
hidm,
vipc
tap tnmg nghidn
cthi
nfaiing loai nguydn
Udu ngodi gd pfauc
vti
cfao dc ngdnh cdng nghidp
chd bidn, ddc bidt
Id
cdng nghidp san xult gily vd bdt
giay. Nghidn
cihi
sir
dting ludng Hda Binh dd san
xuat bdt gily sun phat la mpt hudng di dung
din,
mdt mat, gdp
phin
ndng cao hidu qua sir dting ddi
vdi lodi nguydn Udu nay, mdt khac, timg bude ndng
Trudng
D^ii
hpc Lam
nghifp
cao thu nhdp cho ngudi ndng ddn, gdp
phin
xda doi
giam ngheo.
L
NGUYEN LEU VA
PHUUniG
PHAP
NGHDU
CUU
1.
Nguydn
Udu
Nguydn
U^u
trong nghidn
cthi
la ludng 3 tudi,
dupe lly tai
huy^n
Luong Son, tinh Hda Binh. Thdn
dy luong dupe dt
khiic
vd bdm tfaanfa ddm nho,
cfaidu ddi dam kfaoang 2,0 cm, dam sau dd dupe sly
kfad ddn dp Im kfaoang 10%. Mdt
pliln
dam nguydn
Udu
dupe nghidn nhd tiidnfa bdt, bdt sau khi nghidn
dupe di qua
mit
sang 40 60,
phin
fapp quy dch
dupe cho vdo binh kin dd cdn bdng am, sau dd su
dung cho vide xdc dinh td tiianh hda
fape
cua nguydn
Udu.
Phin
ddm nguydn Udu cdn lai dupe bpc kin
chuan bj cho qud trinh
nlu
bdt giay.
2.
Pfauong pfadp nghien
cthi
Phuong pfadp ly
Ifauydfc
Dung dd xdc djnh
cic
kfaoang bien tfaien vd
nfaidt
dd nlu, tfadi gian bao dn
vd lupng
fada
cfalt
sii
diing
trong qud trinfa nlu bpt
Phirong
ph^
tfairc
ngfai^m:
Dimg dd xdc dinh
thdnh
phin
hda hpc cung nfau
xic
djnh dc tinh
chit
ciia bdt gily ttr nguydn
Udu
dy luong, dc tidu
chuIn
chii ydu dugc sir dtmg
or
cdc tfai ngfaidm
Id:
T-150S-
58,T-210-OS-70, GB/T2677.6-1994,
GB/T2677.8-
1994T, GB/T747-1989. Bpt gily dupe nlu
bing
phuong
ph^
Sim
pfalt,
vdi 3 bidn sd tfaay ddi
Id
nhi^t
dO
nlu, tfadi gian bao dn
vd
lupng hda
chit
sir dung.
84
NONG NGHlfP
VA
PHAT TRIEN
N6NG
TH6N
-
Kt
1
THANG
8/2011
KHOA HQC CdNG NGHfi
•.KET QUA
VATHAO
LUAN
1.
Hinh thdi spi da ludng Hda
Binh
Kich
tiiudc
cfaidu ddi, cfaidu rdng, dd tfad da spi
nguydn Udu va so sdnfa vdi mdt sd lodi nguydn
Udu
tre tnic kfadc dupe trinfa
bdy
trong bdng 1.
TT
1
2
3
4
5
6
7
8
9
10
11
12
Loai nguydn Udu
Ludng
Ludng
Tnicsdo
Ludng
Ludng
Tre
tir
Luc
Tnic
Tnic
Dai
Tregai
Tremor
Buong
Giang
Xult
xtr
HdaBinfa
Thanh Hod
Trung Qudc
An
Do
Trung Qudc
Trung Qudc
Trung Qudc
My
My
My
My
My
Dd dai spi,
mm
2,29
2,34
2,00
2,70
1,89
1,99
1,94
1,73
1,95
2,33
1,80
2,78
Dd rdng spi,
pm
16,15
16,21
16,20
14,00
11,00
15,00
14,70
.
.
-
Tyld
ddi/rdng
143
148 .
125 .
190
180
135
132
-
-
(Ngudn tii
Udu
tham
khio
[1],
[21)
Tir
sd Udu
trong bdng
1
cho thly, chidu ddi trung
binh cua spi ludng Hda Binh
Id
2,29 mm, ty
Id
giua
chidu dai vd chidu rdng cua spi
Id
143. Ndu cdn cti
tiieo phdn dp chidu ddi spi nguydn Udu
tiitrc
vdt ciia
lAWA
(International Association of Wood Anatomists
- Hidp Hdi giai phau gd qudc td), cd tiid tiily spi
nguydn
Udu
ludng dupe xdp
vdo
loai cd chidu ddi ldn.
Ndu so sdnh vdi tidu
chuIn
spi nguydn lidu dimg
tiong san xult gily va bdt gily, tiii ddy dupe coi
Id
loai spi tdt
vd
hodn
ti)dn
cd tiid ddp
ling
dupe
nhihig
ydu
du diing
ti-ong
sdn xult gily
vd
bdt gily.
2.
Thdnh
phin
fada fape
da ludng Hda Binfa
Kdt qua so sdnh tiidnh
phin
hda hpc co ban cua
ludng Hda Binh vdi mdt sd lodi nguydn
Udu
kfadc
dupe
tiinh
bdy
trong bang 2.
Tir
cdc
sd lidu trong bang 2 cho tiily, hdm lupng
chit
tan ti-ong NaOH 1% ciia ludng Hda Binh
vin
tiilp hon mdt sd lodi
ti-e
tinic
khdc, tiilp hon 55,15%
so vdi ti-e gai vd cfai cao hon 0,57% so vdi ludng
Thanh Hda vd ti-e sdo. Hdm lupng
chit
tan ti-ong
NaOH 1% ciia ludng nho hon
mdt
sd nguydn
U^u
cimg lodi
ddc
bidt
Id
tre gai
vd
ludng da Trung Qudc.
Do dd, cd tild
kfaing
djnfa rdng cimg hp tre, nhung
didu kidn ldp dja khdc nhau tiii dc cfai sd ndy ciing
khdc nhau. Hdm lupng
chit
tan ti-ong NaOH 1%, or
mdt
mtic dd ndo dd, phan dnh mtie dp bidn
chit
ciia
nguydn
U§u.
Ndu nguydn
Udu
bj mpc dng nhidu,
ham
lupng
chit
tan ti-ong NaOH 1% sd cdng cao.
Didu ndy hodn todn kfadng cd lpi cho qud trinh san
xult
bdt gily.
Cung tir bang sd Udu trdn cfao
tfaly,
hdm lupng
linhin ciia ludng Hda Binh
or
miic trung binh so vdi
cdc lodi tre khdc, tiilp hon
8,03%
so vdi tre
mfir
vd
cao
ban 17,54% so vdi tre gai. Trong cdng nghidp sdn
xult bdt gily, hdm lupng
Unhui
nhidu hay it sd dnh
hudng ddn hidu
suit
vd
tinh
chit
cua
bOt
gily. Hdm
lupng Unfain cdng it
tfai
dng cd lpi cfao qud trinh nlu
bOt
Hdm lupng xenluloza da ludng Hda Binh
l^i
tuong ddi
cao
(48,77%)
do vdy, ddy
Id lodi
nguydn
Udu
hodn
b)dn
cd thd
d^
ting dupe dc ydu clu cho
nguydn
Udu
sdn bdt gily.
3.
Nghidn
cthi
sdn xult
bdt
gily sun phdt tir
nguydn
Udu
cdy ludng
Hda
Binh
Trong pfadn tiii nghidm
ndy,
da
tidn
hdnh nghidn
cthi
anh hudng ddng tiidi cua 3 ydu td, la:
Nhi^t dd
nlu cao nhlt
(D,
tiidi gian bao dn
(x)
va lupng hda
cfalt su
dt^g (r|)
vdi dc bidn cfaay nfau sau:
T=140PC,160»C,180PC.
T
-
60
pfatit,
90
pfaiit,
120
pfaiit
TI
=
16%,
18%, 20%
(so vdi nguydn
Udu
kfad
hiydt
ddi).
Kdt qud xdc djnfa hidu
suit,
tii sd Kappa vd
dd
ti-Ing ctia
bdt
sau khi nlu
vdi 2
lln
ldp
dupe
tiinh
bdy
ti-ong
bang
3,4
vd
5.
N6NG
NGHlfP VA
PHAT TRIEN
N6NG
THON
- KY
1
THANG
8/2011
85
KHOA HQC CdNG NGHfi
Bliig2.
So
sdnh
hdm
hipngtfadnh
phin
hod
hpc
da
hidng vdi
m$ts6
lodi
nguydn
lifu
khdc
[3] | |
TT
1
2
3
4
5
6
7
8
9
10
11
Loai
nguydn
lidu
Luong
Ludng
Tnic sao
Tre
Ludng
Tregai
Tre
mdr
Trucd?i
Buong
Tdm vdng
Giang
Xudt sti
Hda Binh
Thanh Hoa
Phiic Kidn -
Trung Qudc
Quang
TSy-
Trung Qudc
Tridt
Giang-
Tnmg Qudc
My
My
My
My
My
My
Hdm lupng chdt chidt xult,
%
Trong nuoc
ndng
8,10
8,13
4,30
5,10
5,25
4,40
5.93
6,48
Trong
nude
lanh
3.59
2,96
-
4,59
-
4,20
3,26
Trong
NaOH
1%
17,65
17,55
17,55
28,14
36,28
39,35
27,90
19,35
28,30
15,00
18,97
Linhin,
%
24,74
24,68
26,38
22,88
21,95
20,40
26,90
30,09
24,20
32,20
24,13
Xenluloza,
%
48,77
45.41
45.94
49,96
51,59
46,40
44,40
37,94
44,10
49,30
47,00
Hdm
lupng tro,
%
1,08
1,60
2,31
2,90
1,79
4,80
2,40
3,26
5,30
2,10
1,87
1 1 1
TT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Bang
3.
Hidu
su&
da
T
160
160
160
140
140
140
160
160
160
180
180
180
160
160
160
T
60
90
120
60
90
120
60
90
120
60
90
120
60
90
120
bot
gily
tijr
cdy ludng Hda Binh,
%
Tl
16
16
16
18
18
18
18
18
18
18
18
18
20
20
20
X,
53,17
50,37
45,21
72,23
61,37
53,45
48,22
47,43
43,28
38,15
35,41
31,23
46,41
42,23
41,57
X,
53,18
50,36
45,22
72,24
61,37
53,43
48,21
47,44
43,26
38,17
35,44
31,21
46.40
42,22
41,55
Tir dc sd
U^u
tfai
ngfaidm
cfao tiily,
due
ydu td
nfaidt dp nlu, tfadi gian bao dn vd lirpng
fada
chit
su
dting ddu cd anh faudng trtrc tidp tdi faidu
suit
ciia
bdt gily sau kfai nlu. Neu nfaidt dd nlu tdng
cao,
faidu
suit
ciia bdt gily giam xudng, bdi vi, nfaidt dd cao
lam cfao tdc dp pfadn ting giiia hda cfalt
vd
cdc tfaanfa
pfain
trong gd
xly
ra
rIt
nfaanfa, kfadng nfaiing Unfain
nhanh chdng bi hda tan, ma cdn lam cfao mdt bd
phdn xenluloza ciing bj hda tan, do dd, hidu
suit
bpt
giam xudng. Thdi gian bao dn tdng cung ldm cho
hi$u suit
bdt gily
din din
giam xudng. Ndu tfadi
gian bao dn dng keo dai tfai
hi$u suit
ciia bpt sd tidp
tiic giam, bdi
vi,
tfadi gian dai sd ldm cfao sd lupng cdc
phdn ung giiia hda cfalt nlu va spi go xdy ra nfaidu,
lupng cdc bon
faydrat
bj phdn giai ciing theo do md
tdng ldn, ldm cho hidu
suit
bpt giam xudng.
Cdc sd
Udu
thi nghidm a bang 4 cung cho tiily,
tri so Kappa cua
b^t
gily chju Inh
faudng
rIt
ldn
tir
dc tfadng sd cdng ngfad nlu bdt Kfai
nfaidt dO
nlu
tdng, tri sd Kappa da bpt giam xudng, bdi vi, khi
nhidt dp tdng cao, ddm gd mdm
fada
nfaanfa, dc phan
ting tdch Unfain xdy ra nfaanfa
faon,
ndn lupng linhin bj
hda tan ciing tdng ldn, ldm cho trj sd Kappa nhanh
chdng giam xudng. Kfai tfadi gian bao dn hay lupng
fada cfalt sir dting tdng ldn, ddu lam cfao lupng Unhin
bj
fada
tan tdng ldn vd tii sd
KaRW
ciia
b^t
giam tii^.
Tuy nhidn, ndu
nfaidt
dp nlu, tfadi gian bao dn hay
lupng fada
chit
sir dting tdng ldn
qui
cao, chting sd
lam cfao dc bon hydrat bj phdn hiiy
rIt
nhanh,
tir
dd,
ldm cho fai^u
suit
b^t
gidm xudng vd cudng
dO
ctia
bpt gily cung bj dnh hudng.
86 N6NG NGHIEP VA PHAT
TRIEN
N6NG
THON
- KY
1
- THANG
8/2011
KHOA HQC CbNG NGHfi
B4ng4.TrisdKappadab0tgilytucayhidng
i,br-
, Hda Bmh
"If
TT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
T
160
160
160
140
140
140
160
160
160
180
180
180
160
160
160
T
60
90
120
60
90
120
60
90
120
60
90
120
60
90
120
n
16
16
16
18
18
18
18
18
18
18
18
18
20
20
20
Y,
18,88
19.22
17,18
33,54
28,87
23,57
18,23
18,81
16,27
14,34
14,23
12,77
17,41
17,35
15,45
Y,
2
18,86
19,24
17,20
33,50
28,90
23,58
18,24
18,82
16,26
14,32
14,24
12,78
17,42
17,34
15,43
Bdng
5.
DO
tiding
H
TT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
T
160
160
160
140
140
140
160
160
160
180
180
180
160
160
160
T
60
90
120
60
90
120
60
90
120
60
90
120
60
90
120
da bot
gily
tir
c^
ludng
6a
Binh
n
16
16
16
18
18
18
18
18
18
18
18
18
20
20
20
z,
24,3
25,3
26,7
18,6
20,2
21,9
25,5
25,9
27.7
29.2
30.3
36.8
26,6
26,8
28,5
z.
24.4
25.3
26.9
18.3
20.5
21,7
25,6
25.8
27.8
29,3
30,5
36,9
26,2
26,4
28,6
Tir cdc sd Udu tiitic ngfaidm, tiidng qua xir ly Dd tiiudn tidn cfao qud tiinfa didu kfaidn cdc
tiidng kd ti)an hpc cho ham sd 3 bidn, da tiiu dupe tiidng sd cdng nghd ti-ong qud tiinfa sdn xult, ndn
khdng chd cdc tii sd c6ng nghd tiiich hpp
Id:
Nhidt
dd T
=
160''C,
thdi gian bao 6n
x = 90
phtit, lupng hda
dc phuang trinh tuong quan sau:
X = 709,61
-
1646,9T +
3160,47^
- 1307,7T
+ 705011
-
255T2
-
37,13TI
+
l,47riT+
186,9nT
(1)
Y =
286,12 -
892,8T + 5148^=
-
513,75T
+
5034TT -
2821,5x2
-
10,18TI
-
1,52TIT-
17,7TIX
(2)
Z
=
394,25 + 718T -
24(fP
+ 532,5x + 2550Tx +
2625x2 +
10,2T|
-
0,4TIT
-
18TIX
(3)
Giai
fad
3 phuang tiinh (1), (2) vd (3) tiieo cdc
didu kidn
X -•
max, Y
—>
mm vd Z
—»
max ta suy ra
dupe
dc
ti-j
sd T
=
158,5,
x
= 88,9 vd t) =
17,8.
Nhu vdy, tri sd cdng nghd nlu
bdt
tdi
im
tir
nguydn
Udu
tiidn
cdy ludng Hda Binfa
Id:
Nfaidt
dd
T
=
158,5''C,
tiidi
gian bdo dn x
=
88,9 pfaut
vd
lupng fada
chltsudt^gTi =
17,8%.
chit sii
dtmg
r\
=
18%.
4.
Khdo
ngfaiOm
nlu
bOt
tiieo
cdc gid trj nfaidt
dO,
tiidi gian
vd hipng
hda cfalt
sii dyng
tdi
tiu
Tidn
fadnh
kfalo
nghidm sdn xult
bdt
gily sun
phit vdi
dc didu kidn cdng
ngh$ tdi uu vira tim
dupe:
Nhidt
do
cao nhlt
khi
nlu:
T
-
160»C;
Thdi gian bio
dn:
x = 90
phtit;
Lupng
hda cfalt
sir
dting:
X]
*
18%.
Bdt sau kfai nlu dupe
tidn
hdnh kidm tra dc tinh
cfalt nhu:
dO
tring,
tri
sd Kappa, chi sd cudng d$
chju xd, chi sd ctrdng dd cfaju kdo,... kdt qud dupe
trinh
bdy
trong bdng 6.
Bdng
6.
Kdt
qui
kidm tra tinh cfalt ciia
bQt
sau khi nlu
Chi sd
(Judex)
Tri so Kappa da bpt chua
tly trIng
(Kappa of Unbleached pulp)
DO
trdng ciia bpt chua tly
trIng
(Brightness of Unbleached
pulp,
%ISO)
Do
nhdt ciia bdt chira tly
trIng
(Viscosity of Unbleached
pulp,
ml.g'O
Mat
do
(Tightness,
g/cm^
Chi sd cudng
dO
chju xd (Tear index,
mN.m^.g'^)
Chi
sd cudng dd chiu
biic
(Bursting
index,
kPa.m^.g'O
Chi sd
do
bdn chju kdo (Tensile index,
N.m.g'O
Kdt qud
18,81
25,90
1343,22
0,45
18,35
3,29
58,26
Tir bdng sd Udu cho tiily. tii sd Kappa ciia
bOt ^^ ^^ju
xd
Id
18,35
mN.mlg'S
chi sd cudng
dO
chju
chua tly ti-Ing
Id
18,81,
dO
ti-Ing ctia bOt chua tly
^yc Id
3.29 kPa.mV vd chi sd dO bdn cfaju kdo
Id
tring
Id
25,90
%
ISO,
dO
nhdt da
bOt
chua
t^y
tring
^8,26
N.m.g'*
Cdc til sd ndy
faodn
b)ln pfaii
hpp vdi
id 1343,22
mlg-',
mdt dO Id
0,45
g/cm^
cfai
sd cudng
y^"
^lu
ciia
bOt
gily dimg
ti-ong
sdn xult dc
lo?i
NdNG
NGHIEP
VA
PHAT TRI^N
N6NG
THON
-
KY
1
THANG
8/2011
87
KHOA HQC C6NG NGHfi
gily in bao vd gily vdn pfadng
pfalm
tfadng dting dupe
quy djnfa trong tidu
cfauin
GB 2677.4-81.
Vi
vdy, d
tfad kdt ludn
ring,
vdi nguydn Udu ludng Hda Binfa tfai
didu kidn cdng nghd nlu thicfa hpp nhlt
Id
nhidt
dO
T
=
160"C,
tiidi gian bao dn x = 90 phut vd lupng hda
cfalt sir dting
TI
= 18%.
IV.
KET LUAN
1. Kich tiiude chidu ddi spi tnmg binh da ludng
Hda Bmh
Id
2293,15 pm dupe xdp vdo dp spi dai, ty
Id
chidu ddi spi/chidu rdng
Id
143 ciing dupe xdp vdo
dang spi cd
dO
thon tdt, ddy Id
mOt
trong nhiing uu
didm Ai lua chpn nguydn Udu cho san xult
bOt
gily.
2.
Hdm lupng xenluloza cua ludng Hda Binh
Id
48,77%,
tuong duong vdi
mOt
sd
lodi
tre dupe khai
thdc tai
mOt
sd dja phuong khdc vd ciing ngang bdng
vdi nguydn Udu gd thudng dimg
lam
nguydn Udu
trong sdn xult
gjly.
Ddy
Id
mOt
trong nhimg cfai tidu
quan trpng nhlt dd ddnh gid cfalt lupng nguydn Udu
trong san xult
bOt
gily. Vi vdy, cd tfad
khIng
djnfa,
nguydn Udu ludng Hda Binh hodn toan cd thd sir
dung Ai san xuat bdt gily sun phat.
3.
Ham Itrpng ciia
linhm
trong ludng Hda Binh
24,74%
la khdng ldn, it gdy trdr ngai cho qud trinh gia
cdng chd bidn ddc bidt
Id
trong san xult
bOt
gily.
4.
Nguydn
Udu
luong
Id
mOt
loai nguydn Udu dd
nlu,
cti
thd kfai tfaay ddi tfadi gian, nfaidt dO, lupng
fada
chit
sir dting thi hidu
suit
vd tinh
chit
bpt tiiay
ddi theo dting quy ludt, khdng khdc gi so vdi cdc
nguydn Udu khdc.
5.
Thdi gian nlu thicfa fapp
nfalt
tfaeo phuong
phdp sun phdt cho cdy ludng Hda Binh
Id
90 phtit,
nhidt
do
16(f'C,
lupng hda
chit
sir
dting la
18%
vd
cho
hidu
suit
bot
ciing
khi
tdt.
TAI
UEU 1HAM KHAO
1.
lin
J.
X.,
He X. Q.,
Lignification
and
Ugnin
heterogeneity for various age classes of bamboo
(Phyllostachys pubescens)
stems(J].
Pfaj^iologia
Plantarum, 2002.
2.
Parameswaran N., Liese W., Ultrastructural
aspects of bamboo
ceUs
Q].
CeUu. Chem. and
Technol., 1999.
3.
Dence C. W., Chemistry of Chemical Pulp
Bleaching. In: Pulp. Bleaching Principles and
Practice
Eds.
TAPPI
Press, 1996.
RESEARCH
ON
THE POTENTIAL FOR MAKING
PULP
FROM
Dendmcalamus
baratiis
HSUCHETD.Z.U
Cao
Quoc
An
Summary
Dendro
calamus
baratus Hsuch et
D.
Z.
Li
big sized bamboo
species,
widely grown
in
Thanh Hoa, Hoa Binh,
Nghe
An,
Ha
Tmh
provinces.
Traditionally,
it
has
been mainly used as raw materials for crafts production
of
woodlike based boards, or for housing in rural
areas.
At
present
Dendrocakunus
baratus is used to produce
paper
pulp;
however, the basic data on the chemical characteristics, as well as technology of chemical pulp
from the
Dedro
calamus baratus
Hsuch et
D.
Z. Ii is rarely published. In these experiments raw
materials
used are 3 years old
Dedrocalamus
baratus
Hsuch et D. Z.
M
planted in Luong Son district, Hoa Binh
province. The experiments were conducted in the laboratory Center of wood technology faculty- Vietnam
Forestry University. The chemical analysis results are as foUowing:
fiber
length 2.29 mm,
fiber
width 0.016
mm, crude fiber
143,
ash contents
1.08%;
the extractives in hot water are of 8.10%, in cold water
3.59%,
in
1%
solution of NaOH
17.65%,
ceUulose content
48.77%,
Ugnin content
24.74%,
pH 5.65; the cooking temperature
is
160''C;
insulation duration is
90
min;
chemical reagent
ratio
18%.
Keywords:
Brightness
of
pulp,
Hoa
Binh
bamboo,
sulfate
pulp,
yield
of
pulp.
Ngudi pfadn
biOn:
GS.
TS.
Hd Cfau Cfavr
88
NCNG
NGHIDP
VA
PHAT
TRIEN
NdNG
THON
- Kt
1
- THANG
8/2011